Haldex Service Training – Self Study Program


I recently have been lucky enough to put my hands on the VW Haldex Service Training – Self Study Program (no. 89C303). And since I get a lot of questions about it, here’s the integral document. (Haldex section) BTW, it’s as good for the Audi TT Haldex.

Enjoy!

Andre

PS Also see: HPA’s Haldex Performance Controller and Haldex Controller Update: Blue – Orange – Silver Controllers.

Haldex Coupling

The development of the Haldex coupling is a giant step forward in modern all-wheel-drive technology. This coupling is controllable, based on the inputs the Haldex control module receives from the vehicle. Slip is no longer the only decisive factor in the distribution of drive forces — the car’s dynamic state is also a factor. The Haldex control module monitors the ABS wheel speed sensors and the engine control module (accelerator pedal signal) via the CAN-bus. This data provides the engine control module with all the information it needs on road speed, cornering, coasting or traction mode, and can respond optimally to any driving situation.

 Characteristics of the Haldex coupling:
• Permanent all-wheel drive with electronically controlled multi-plate clutch
• Front drive characteristic
• Quick response
• No strain on clutch when parking and maneuvering vehicle
• Compatible with different tires (e.g., emergency wheel)
• No restrictions on towing with the rear axle on the ground
• Fully integrates with systems such as the Anti-Lock Brake System (ABS), Electronic Differential Lock (EDL), Anti-Slip Regulation (ASR), Electronic Brake Distribution system (EBD), and Electronic Stabilization Program (ESP)  

Haldex-Coupling

Haldex-Coupling

The Haldex coupling is mounted on the rear axle differential and is driven by the drive shaft. Engine torque is transmitted to the drive shaft through the gearbox, the front axle differential, and the front axle drive The drive shaft is connected to the input shaft of the Haldex coupling. In the Haldex coupling, the input shaft is separated from the output shaft to the rear axle differential. Torque can only be transmitted to the rear axle differential when the Haldex coupling clutch plates are engaged.

Haldex-Audi-VW

Haldex-Audi-VW-overview

Haldex System

The parts include:
• Input shaft
• Inner and outer clutch plates
• Lifting plate
• Roller bearing with annular piston
• Output shaft

The electronics are:
• Pump for Haldex coupling
• Regulating valve positioning motor
• Temperature sensor
• Haldex control module

The hydraulics are:
• Pressure valves
• Accumulator
• Oil filter
• Annular piston
• Regulating valve

Haldex-Parts 

Multi-Plate Clutch The clutch input shaft, indicated in blue in the illustration below, is connected to the prop shaft. The roller bearings for the lifting piston and the working piston, as well as the outer clutch plates, are engaged when the input shaft rotates. 

The lifting and working pistons are annular pistons. The output shaft, indicated in red in the figure, forms a unit from the lifting plate through to the drive pinion head. The inner clutch plates are also connected to the output shaft via longitudinal toothing.

Disengaged Haldex Clutch Assembly

Function When a speed difference is present between the input and output shafts, the input shaft, together with the roller bearing of the lifting piston, rotates around the still stationary lifting plate of the output shaft. The roller bearing of the lifting piston tracks along the undulating surface of the lifting plate. The roller transfers these upward and downward movements to the lifting piston, causing it to perform a lift movement, building up oil pressure.

Oil pressure is diverted via an oil duct to the working piston, forcing the working piston to move to the left against the roller bearings and the pressure plate of the clutch plate set. The clutch plate set is compressed. The input shaft and the output shaft of the clutch are now interconnected, connecting both the front and rear axles and making allwheel drive possible.

Engaged Haldex Clutch Assembly

When a difference in speeds occurs between the front and rear axles, the outer clutch plate housing, together with the roller bearings, rotates around the output shaft in such a way that the roller bearings of the lifting piston roll on the lifting plate.

Due to the shape of the lifting plate, the roller bearings of the lifting piston follow an undulating path and transfer the lifting movement to the lifting pistons in the housing. 

The output shaft, with its splines for the inner clutch plate, combines with the lifting plate and the drive pinion head to form a unit. 

! The roller bearings are shown here for your information only. 

! For reasons of clarity, we have shown the lifting plate with two cams. In reality, there are three cams on the lifting plate. The function remains unchanged.

Engaged Haldex Clutch Assembly-2

The outer clutch plate housing, together with the splines for the outer clutch plate and roller bearings, combine with the input shaft to form a unit.

The movement of the lifting piston produces an oil pressure which acts on the working piston via the oil duct, pushing the piston to the left. 

Pressure is transferred via a pressure plate to the clutch plate set and the roller bearings of the working piston. The clutch closes and thus interconnects the front and rear axles. 

! The roller bearings are located in the outer clutch plate housing, as shown here. These roller bearings are shown here for your information only.

Haldex-Inner-Housing 

Diagram of the Oil Pressure System 

The pressure limiting valve determines the maximum pressure on the clutch plates.

You have already seen how oil pressure is built up at the lifting piston as a result of a difference in speeds between the input shaft (blue) and the output shaft with lifting plate (red). 

This oil pressure is regulated by valves. The clutch plate can thus allow a certain amount of slip when open and nearly closed. 

! For reasons of clarity, we explained function on the previous pages using a lifting piston by way of an example. In reality, there are two lifting pistons in the clutch housing — these pistons are actuated by roller bearing pairs. Therefore, two suction valves and two pressure valves are also required.

Diagram of the Oil Pressure System

Diagram of the Oil Pressure System

Motronic Engine Control Module (ECM) J220

This control module is mounted in different areas on the various vehicles, but is normally accommodated in the plenum chamber. The operating mode of J220 is torque-oriented.

Signal Utilization for the All-Wheel Drive Electronics

J220 provides the following signals to the All-Wheel Drive (Haldex) Control Module J492 along the CAN-bus:
• Engine speed signal
• Accelerator pedal position
• Engine torque
Effects of signal failure:
• The Haldex coupling will not operate

Motronic Engine Control Module (ECM) J220

Engine Speed (RPM) Sensor G28

G28 is an inductive sensor and is installed near the oil filter on the left-hand side of the engine.

Signal Utilization

This sensor records in the exact angular position of the crankshaft to determine the ignition and injection point, as well as engine speed.

Engine Speed

As soon as the engine turns, the sensor wheel moves past G28 and generates an alternating current (AC) voltage. The frequency and amplitude of this voltage changes with engine speed.

Motronic ECM J220 calculates engine speed from the frequency of the AC voltage.

Ignition Point

To recognize crankshaft position, the sensor wheel has a larger gap trigger tooth which serves as a reference mark.

ffects of Signal

Failure If the engine speed signal supplied by G28 fails, the engine will not start or run.

If no engine speed signal is received, the Haldex control module J492 will not energize the pump, leaving rear axle drive capability disabled. This also allows the vehicle to be towed with the rear wheels on the ground because no power is transmitted back through the wheels to the transmission.

Engine Speed (RPM) Sensor G28

Engine Speed (RPM) Sensor G28

Throttle Position Sensor G79 and Sender 2 for Accelerator Pedal Position G185

Two independent potentiometers, G79 and G185, work together to receive and send accelerator pedal position analog signals to Motronic ECM J220.

Haldex control module J492 uses these signals in combination with other signals to determine when and how much power should be applied to the rear axle. G79 and G185 represents the driver intention, and is not necessarily how J220 is allowing the engine to operate.

Effects of Signal Failure

J220 monitors G79 and G185 for proper functioning and plausibility. If one of these two fails, the other sensor/sender acts as a back-up. The Electronic Power Control (EPC) Warning Lamp K132 on the instrument cluster will illuminate and the vehicle will enter emergency running mode.

If this signal is not available to the Haldex control module J492, all-wheel drive will not be available.

Accelerator Pedal Position Sensor Sender G79 G185

ABS Control Module J104

This control module is combined with the hydraulic unit, which is mounted in the engine compartment on the left-hand side. When the ignition is turned on, the control modules carry out a self-test.

This control module consists of two processor systems, which ensures a high level of fail-safety. In addition to monitoring individual components, the two processor systems monitor each other.

Signal Utilization for All-Wheel-Drive Electronics

The following signals are supplied to the Haldex control module J492 along the CANbus:
• ABS Wheel Speed Sensors G44 and G47
• Brake Light Switch F9
• Parking Brake Light Switch F9
• Longitudinal Acceleration Sensor G251

Effects of Signal Failure

In the unlikely event of total failure of the control module, the Haldex unit will not function properly.

ABS Control Module J104

Right Rear and Left Front ABS Wheel Speed Sensors G44 and G47

These sensors detect changes in wheel speed, sending this information to ABS Control Module J104 in the form of wheel speed information. This information is then sent to Haldex control module J492 via CAN-bus.

Each wheel speed sensor is mounted in the vicinity of the axle flange. A toothed wheel is positioned on the axle flange in such a way that it moves past the top end of the wheel speed sensor when the wheel rotates.

Magnetic lines of force between the tooth and tooth gap of the toothed wheel are distorted. This induces a sine-wave AC voltage in the coil of the engine speed sensor.

The frequency and amplitude in the coil is dependent on wheel speed. J104 calculates the momentary speed of individual wheels from the frequency. Effects of signal failure:
• No ABS control
• No all-wheel drive control

Right Rear and Left Front ABS Wheel Speed Sensors G44 and G47

Right Rear and Left Front ABS Wheel Speed Sensors G44 and G47

ESP Sensor Unit G419

ESP Sensor Unit G419 combines the functionality of two sensors, Sensor for Transverse Acceleration G200 and Sensor for Rotation Rate G202. This combined sensor is located on a bracket in the steering column area, under the instrument cluster. G419 is able to measure both transverse acceleration and rotational rate or yaw.

Effects of Signal Failure

Without the measurement of transverse acceleration or rotational rate, it is not possible for the ABS Control Module J104 to determine if ESP intervention is necessary. As a result, ESP and ASR will not operate, and the ESP light will illuminate in the instrument cluster.

Electrical Circuit

G419 is connected to J104 via four wires.

ESP Sensor Unit G419

ESP Sensor Unit G419

Brake Light Switch F

This switch is located at the upper end of the brake pedal and is secured to the pedal support.

Signal Utilization

This brake light switch sends the “brake activated” signal to ABS Control Module J104, which informs Haldex control module J492 along the CAN-bus.

When the brake is applied, J492 immediately opens the pressure regulator via the positioning motor, opening the Haldex coupling clutch.

Effect of Signal Failure

The information provided by the CAN-bus is used as an alternative.

Brake Light Switch F

Brake Light Switch F

Parking Brake Warning Light F9

This switch is located under the parking brake lever.

Signal Utilization

F9 sends the “parking brake engaged” signal simultaneously to ABS Control Module J104 and the Haldex control module J492.

If the signal generated by F9 is picked up, the Haldex coupling clutch is opened.

Effects of Signal Failure

If the switch remains closed, then no allwheel drive control is available and restrictions are placed on ABS control.

Parking Brake Warning Light F9

Parking Brake Warning Light F9

Hydraulic Temperature Sensor G271

This sensor is installed near the regulating valve in the Haldex control module J492 housing and is immersed in hydraulic fluid.

Signal Utilization

G271 senses current hydraulic oil temperature, sending this information to J492. This information is used for constant adaptation to the changing hydraulic fluid viscosity.

If the hydraulic fluid temperature exceeds 100°C, the clutch is released. If the temperature of the hydraulic fluid drops below 100°C, the clutch is again pressurized.

Effects of Signal Failure

All-wheel drive is shut off if no signal is received from G271.

Hydraulic Temperature Sensor G271

Hydraulic Temperature Sensor G271

All-Wheel Drive (Haldex) Control Module J492

This control module is mounted directly on the housing of the Haldex coupling and combines with the positioning motor and the regulating valve to form a unit.

Design and Function

J492 is connected to the engine and ABS control module J104 via the CAN-bus. From the signals that are generated by Motronic ECM J220 sensors, J492 decides what oil pressure to apply to the plates of the Haldex coupling clutch.

The oil pressure acting on the plates of the Haldex coupling clutch determine what torque is to be transmitted to the rear axle.

Effects of Signal Failure

If J492 is not operating correctly, no all-wheel drive is possible. 

! Use address word 22 to access All-Wheel Drive (Haldex) Control Module J492.

Haldex Control Module J492

Oil Pressure Actuator V184

This positioning motor is integrated in the Haldex control module J492 housing.

Design and Function

V184 is supplied with voltage by J492 and functions as a stepping motor.

At the command of J492, the positioning motor changes the level of the regulating pin in the pressure regulator via a small pinion gear.

The level of the regulating pin changes the cross section of a return bore in the pressure regulator. This controls the pressure acting on the working piston, and in turn, on the clutch plates.

Oil Pressure Actuator V184

Oil Pressure Actuator V184

 

Haldex Clutch Pump V181

The pump for the Haldex coupling is attached to the Haldex coupling housing.

Design

After the engine has been started, the pump for the Haldex coupling is supplied with voltage by Haldex control module J492 as soon as engine speed exceeds 400 rpm.

Function

The pump for the Haldex clutch conveys oil to the lifting piston and brings the lifting piston into contact with the lifting plate via roller bearings.

At the same time, oil reaches the working piston. This eliminates any play from the clutch plate set and ensures quick clutch response.

Effects of Signal Failure

If V181 is not operating correctly, no all-wheel drive is possible.

! The Haldex clutch pump is directly supplied with voltage by J492.

Haldex Clutch Pump V181

Self-Diagnosis

Haldex self-diagnosis electrically monitors:
• Signals generated by the sensors
• Activation of the positioning motors
• Haldex control module J492

If J492 detects a fault, it calculates a substitute value from other signals and makes an emergency running program available.

In the data transfer facility, the following functions can be read out under the address word 22 “4-wheel-drive electronics” via the VAS 5051 or VAS 5052:
02 Check DTC Memory
03 Output Diagnostic Test Mode (DTM)
05 Erase DTC Memory
06 End Output
08 Read Measuring Value Block

VAS 5051

Posted in Audi TT Performance | Tagged | 15 Comments

Just got the DMC Concept Rear 3.2 Wing


It’s here! :)

Here’s a few pics, as I opened the box. One major thing left to do, find out what will be the final car color… Then I can paint and install the DMC wing.

Can’t wait till it gets here!

(Buy your own DMC Rear Wing at www.europtuning.com)

Posted in Audi TT MK1 Body | Tagged , | 3 Comments

Just got the Osir V1 Fenders


Quick update: Just got the OSIR Fenders. I paid only 20$ in custom duty fees, since the Osir guys marked the package as a “repair”. Thanks Guys!

I was actually impressed on the very light weight of the fenders. 2-3 pounds max. Can’t wait to install them!

But first, I need to order the body kit. And since I’m not 100% convinced, it wil have to wait to January. :(

Posted in Audi TT MK1 Body | Tagged , | 2 Comments

More Audi TT LED Headlights Pictures


After a month of driving a Subrau Outback, you can imagine the fun I had to take the TT out of the garage this afternoon. I was asked by a blog reader to send him a couple of pictures of my LED headlights. So, even with freezing temperatures and a light snow falling from the sky, I found the courage to open the garage and take the car out. :)

ahhh, so much fun to see my TT after a few weeks

Have you ever seen a TT RS MK1 (8N) ?

I waited for the engine to warm up and decided to make a quick run on the highway, just to make sure the TT was still fast as I remembered… I came back with a smile of my face. And why did I take the car out again? Oh yes, the pictures!

Below are the pictures I took today (daytime), of the LED headlights. You can buy them following this link: Audi TT LED Headlights.

 

Posted in Audi TT RS Project | Tagged , | 2 Comments

Audi TT MK1 (8N) Wide Body Kit


After posting a full line-up of all body kits available for the MK1 TT, I have been asked: “What about Wide Body Kits?”. Good question! The widebody kits were once available but in limited quantities. At the end of 2010, with the MK2 TT bieng the primary focus, these widebody MK1 kits are very hard to find. But if you search forums, you will find enthousiasts that are selling their kits. I did find a few, some with kits still in the box!

Here’s a list of the Wide Body Kits for the Audi TT MK1 (8N)

[January 2011 Update] DMC Concept is about to launch a new wide body kit for the mk1 TT! See here: DMC Concept Wide Body Kit.

 

ABT TT Limited Wide Body

ABT Audi TT MK1 (8N) Limited Wide Body

ABT Audi TT MK1 (8N) Limited Wide Body

As a result of extensive wind tunnel tests, the Abt specialists from Kempten have established an aerodynamic kit which results into more downforce and therefore, a better road-holding with the TT Wide Body. At the Nurburgring, Laurent Aiello has scored two brilliant victories for the Team Abt Sportsline with the Hasseroder-yellow Abt-Audi TT-R. This TT Wide Body not only shares the front spoilers and the extended fenders with the race car, but also the side skirts, a rear wing and a complicated diffuser, which gives downforce at the rear. Several carbonfibre parts also add to the feeling.

The technicians that built the limited wide body have also used racing experience while conceiving the suspension. Christian Abt himself has taken care of the set-up. The professional racing driver opted for Abt wheels
 of the type A27. ContiSportContact tyres with 235/35 size have been mounted on the front wheels, 275/30 tyres on the rear wheels.

For the road the ride height of the Abt TT is lowered by 1.6 in (40 mm) compared to the standard model. The Abt sports team put a lot of racing knowledge into the TT: a sport suspension with stronger anti-roll bars, sports brakes, a safety bar made of polished aluminium, and a single windscreen wiper .

DTM GT Wide Body

 
DTM GT Wide Body Audi TT MK1 (8N)

DTM GT Wide Body Audi TT MK1 (8N)

The full widebody kit were made of Carbon fibre and Pliable FRP (PFRP) and FRP. The fender pieces are all full replacements along with the front and rear bumpers. Although the front track is actually wider than the rear by 20mm, the kit was designed for the quattro, FWD, Coupe and Roadster models.

The full widebody kit were made of Carbon fibre and Pliable FRP (PFRP) and FRP. The fender pieces are all full replacements along with the front and rear bumpers. Although the front track is actually wider than the rear by 20mm, the kit was designed for the quattro, FWD, Coupe and Roadster models.

This particular droptop model was painted in bright orange, rolling on 19×10″ Work S3 wheels in the front with 255/30/19 and 19×11″ at the back with 285/30/19.

Watch this car on YouTube.

DTM Race Car copies

My search led me to individual owners that made wide body adaptations. You may like it or not, but you have to salute their efforts. :)

This car is a copy of the real DTM (Deutsche Tourenwagen Masters) track car.

audi dtm 10 uq

audi dtm 10 uq

Original! This DTM TT has been modified as a Playstation Gran Turismo 5 simulator. Watch this car on here or here.

Sony Playstation Gran Turismo 5 - Real Audi TT DTM

Sony Playstation Gran Turismo 5 - Real Audi TT DTM

The picture below appears to be a shot from Audi or Abt Sportsline. The car is a Mk1 TT coupe in aerodynamic development for the DTM series. The TT-R was only raced during the 2003 season in the DTM as Abt Sportsline helped usher Audi back into the German tin-top series. (Similar to the yellow DTM TT above)

Audi MK1 (8N) TT-R DTM

Audi MK1 (8N) TT-R DTM

Posted in Audi TT MK1 Body | Tagged , , , | 9 Comments

Audi TT LED DRLs (Tail Lights)


What about tail lights?

I was asked by a forum member what were the different tail lights options the the MK1 TT. Since I had searched myself, I will post my findings. I’m personally not sure of changing mine, since I like their original look (very well like the LED Headlights). But it all depends on my final paint job: it may require additional changes to the rear, including the tail lights. We’ll see then!

To my best knowledge, there is only 5 different options available for the TT. 2 are conventional and the 3 other ones are LED. Pricing varies from 170$ to 550$.

Conventional tail lights

Smoked/Tinted Rear Lights. These rear lights are original Audi rear light lenses which are prepared in 3 different stages of Tint: Light, Medium and Dark Tint. Their cost is about 350$. There i also a DIY spray paint you can use to cover the lens. The finnish is ok, but not great. The only advantage being its low cost.

Smoked Tinted Audi TT Mk1 8N Rear Lights

Smoked Tinted Audi TT Mk1 8N Rear Lights: about 350$

Lexus style tail lights. These lights are offered in clear or black versions. They are the cheapest option here and go for around 170$ a pair. Look them up under: Altezza or Lexus Type Tail Lights.

Lexus Type Tail Lights Audi TT MK1 (8N) about 170$

Lexus Type Tail Lights Audi TT MK1 (8N) about 170$

Clear Altezza Tail Lights 170 dollars 110103PGKF

Clear Altezza Tail Lights 170 dollars 110103PGKF

Black Altezza Tail Lights 170 dollars  110103NTUI

Black Altezza Tail Lights 170 dollars 110103NTUI

LED Tail Lights

Dream Team Motorsports sells LED tail lights for the MK1 TT. They look different but somewhat cheap, as the interior looks like a rectangular insert incorporating two square LED lights. There is also a LED yellow bliker strip. They go for about 190$.

99-06 Audi TT LED Yellow Strip Rear Tail Lights about 190$

99-06 Audi TT LED Yellow Strip Rear Tail Lights about 190$

Dream Motorsports AUDI TT LED REAR TAIL LIGHTS 190 dollars

Dream Motorsports AUDI TT LED REAR TAIL LIGHTS 190 dollars

R8 Type Tail Lights. Typical of the new “updated” TT look, these LED R8 type headlights are often used with the new Audi TT body kits that include the R8 design elements. They are available in red or chrome interiors and are yours for about 550$. It’s very funny to read forums that discuss about them: 50% of the posts are for them, the other 50% against. The main reasons against are focused on the lights design: the majority saying they look cheap or “not good enough”. It is true that the brakes, when lit, are pale and the color is pinkish.

Audi TT 8N R8 LED Rear Tail Lights 550 dollars

Audi TT 8N R8 LED Rear Tail Lights 550 dollars

Audi TT 8N LED Rear Tail Lights RED Rearlights not lit

Audi TT 8N LED Rear Tail Lights RED Rearlights not lit

Audi TT 8N LED Rear Tail Lights RED Rearlights lit

Audi TT 8N LED Rear Tail Lights RED Rearlights lit

Audi TT 8N LED Rear Tail Lights CHROME Rearlights not lit

Audi TT 8N LED Rear Tail Lights CHROME Rearlights not lit

Audi TT 8N LED Rear Tail Lights CHROME Rearlights lit

Audi TT 8N LED Rear Tail Lights CHROME Rearlights lit

Modified tail lights. A few suppliers around the world will modify your tail lights to make them different. This custom made tail light has LED strips as blinkers and LED backup lights. Cool idea. I like the way the back-up LED strip lights. Their prices are usually higher and vary between 500 and 700$.

ak57hay Naresh rear tail lights audi tt MK1 8N

Hand Made LED Tail Lights Audi TT MK1 (8N)

 


Posted in Audi TT MK1 Body | Tagged , | 5 Comments

Audi TT LED DRLs (headlights)


Hi guys,

I have been asked how I got those magnificent :) LED headlights and angel eyes. Here’s how and how you can also get a pair yourself! They look great and update the car’s look like those MK2s.

A simple Google search will allow you to figure out how to DIY. I considered trying myself but after a few days of reading on the subject, I got discouraged. Yes the parts are easy to find, such as clear corners, LED strips (white and orange), angeleyes, etc. But the assembly is not that easy! First, you need to take your headlights away from your car and disassemble them completely. Then, you need to take out the old blinkers and configure the LEDs to switch to amber when the blinkers are turned on, back to white after, etc. That’s done with extra material you can’t find on the web. You need to go to a local shop and find the electronics you need. You also need to add the angel eyes and wire them properly. Not for me, I decided…

Instead, I found it easier to buy a complete kit that I only have to install myself. Not the internals, the complete LED DRLs! I found a supplier in UK and we both agreed that I would order a pair and also become his reseller in North America.

So, if you are looking for a pair of LED Daytime Running Lights (DRL), with or without angel eyes, go to this page.

Below are pictures of my headlights being modified. The mods are: Paint from silver to black, smoke corners, LED blinkers, European style headlights without the orange patch on the side, angel eyes (light strip around the high beams) and finally, yellow high beams. Talk about being different! Whenever I drive on highways, left lane, coming rapidly onto cars, my headlights make the difference: people see me coming from far away, just wondering what kind of car is behind them. So they dive into the middle lane, without even me having to do anything! Incredible how headlights change the way other drivers behave. What I love most, is when I need to “flash” them, using my yellow high beams. I get an instant “Oh my god, let’s change lanes” reaction. Since yellow high beams are rare in North America, this is a sure way to get the attention of upcoming traffic. Anyhow, as you can see, I love my headlights and I enjoy them every day. :)

Now, the pics, from assembly to final look, on the race track.

Audi TT LED

Audi TT LED modification: old and new headlight interior

LED light strip Audi TT

LED light strip going into the TT's headlight

LED DRL Audi TT - white blinkers

LED DRL Audi TT - white blinkers on

LED DRL Audi TT - orange blinkers

LED DRL Audi TT - orange blinkers on

Right LED headlight with angel eyes - Audi TT

Right LED headlight with angel eyes - Audi TT

Pair of LED DRLs with angel eyes - Audi TT

Pair of LED DRLs with angel eyes - Audi TT

My Audi TT with no headlights at all

My Audi TT with no headlights at all

LED DRLs with angel eyes - Audi TT MK1 8N

LED DRLs with angel eyes - Audi TT MK1 8N

Audi TT MK1 LED DRL on race track

Audi TT MK1 LED DRL on race track

 

Want these LED Headlights on your car? Go to: Audi TT LED (R8 LED Daytime Running Lights like POGEA RACING)

Posted in Audi TT MK1 Body | Tagged , , | 30 Comments