Step 1: Check if your vehicle’s steering wheel control module supports the cruise control system. All Audi A3 models with DIS (Driver Information System) already have right module fitted. Use VCDS. You need a MIDLINE or HIGHLINE steering wheel control module. Recommended Cruise Control OEM part for Audi A3 8P is 8P0953549F.
Step 2: Check your turn signal switch. There are 2 types. Type 1- when you push the lever for high beam, the lever it stays there. Type 2- when you push the lever for high beam, the lever turns back. Type 1 (8P0 953 513 A, 1K0 953 513 A) and Type 2 (8P0 953 513 E, 1K0 953 513 E) are not compatible. There is a diference between them. So, if you have Type 1, you need a same type cruise control. Same for Type 2.
If you have Type 1 turn signal switch, you need a Type 1Audi A3 8P Cruise Control switch (8P0953513B). If you have Type 2 turn signal switch, you need a Type 2 Audi A3 8P Cruise Control switch (8P0953513F). If you are a handy-man, there is a way to change levers and inside pieces between them, like I did. It works! I will show you in another post, called Cruise Lever. Look for it!
Step 3: You need a trim lower part for Audi A3 8P models with cruise control system. Recommended OEM part for Audi A3 8P is: 8P0953512A. Usually, you can bay it together with Audi A3 8P Cruise Control Switch. You can start from HERE.
Step 4: If you have an Audi A3 8P Cruise Control Switch, a Midline or Highline steering wheel control module and a lower trim part, you can begin.
1. Start with unscrewing the 2 torx in the back of the wheel with torx T25 bits. You have to turn the wheel to be able to reach the screws.When this is done the airbag is now loose;
2. Disconect the battery;
3. Unplug the yellow-orange airbag cable;
4. Unscrew the center bolt using M12;
5. Make a mark on the center steering thing to indicate center of the wheel, than remove steering wheel;
6. Remove the bottom cowelling, to do this you need to remove the adjuster handle underneath (2 x T25 screw) and the other T25 screw that you will see. The top of the Cowell hinges up like a car bonnet so you can gain access to the two front T25 screws (do not disturb slip ring position);
7. At bottom of the slip ring is a T9 screw, remove it.
8. Removing ECU: Between the main black plug and the small other plug there is a plastic latch. Using one hand gently pulling the ecu down, use a finger to find the latch and push it. The first clip is directly above the black connector. You push it in and the back of the steering ECU will drop down.
9. There is another latch to be released from the front. You can use a 3 mm screw driver to push left in the hole which should release the second clip. The ecu should pull downwards off the rack.
10. Remove the 2 connectors at the back of ECU, to do this the main (big black one) one has a plastic clip that's red and with a flat blade is pulled out which allows you then to push a another clip behind down and pull the black plug out. The other connector is a spring loaded clip, push it away from the ecu and the plug will come out.
11. Unclip the 2 clips holding slip ring in place and the slip ring will pull off.
12. The turn signal switch stalk is held in by a plastic clip at the left back. Use a screwdriver to prise this while pulling the stalk forward away from dash.
13. Push Audi A3 8P Cruise Control Switch in place and reverse above.
14. ESP error and TPMS error messages will appear when restart the car. This will disappear by turning the steering wheel to right and left.
1. 16-Steering wheel
2. Coding - 07
0 = no Board Computer, no Cruise Control
1 = Board Computer, no Cruise Control
2 = no Board Computer, Cruise Control
4 = Board Computer, Cruise Control
4. Coding - 07
5. Long Coding Helper
6. Byte 5 (Replace 0 with 1)
7. Activate Bit 5
8. Exit & Save
ON: Pull the lever towards you.
SET: To set the current speed as the cruising speed and activate the cruise control, press the button SET. The cruise control status is indicated by the green led in the speedometer and is also shown briefly in the Driver Information System. Push the lever up or down for increase or decrease cruising speed.
OFF: Push the lever away from you until it engages. The green led indicating the cruise control status in the speedometer dial will go out.