Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Audi S8FACTORY OEM SERVICE PROCEDURE
Overview - Lane Change Assistance Control Module
- Control Module for Right Front Object Detection Radar Sensor -J1089-
- Removing and Installing. Refer to CONTROL MODULE FOR LEFT AND RIGHT FRONT OBJECT DETECTION RADAR SENSOR -J1088- / -J1089-, REMOVING AND INSTALLING .
- Calibrating. Refer to FRONT CORNER RADAR, CALIBRATING .
- Mount
- For the bumper cover
- Shield
- Bolt
- Tightening specification -Item ) Bolt
- Lane Change Assistance Warning Lamp in Front Passenger Exterior Rearview Mirror -K234-
- Removing and Installing. Refer to LANE CHANGE ASSISTANCE WARNING LAMP IN DRIVER AND FRONT PASSENGER EXTERIOR REARVIEW MIRROR -K233- / -K234-, REMOVING AND INSTALLING .
- Lane Change Assistance Control Module -J769-
- Removing and Installing. Refer to LANE CHANGE ASSISTANCE CONTROL MODULE -J769- / -J770-, REMOVING AND INSTALLING .
- Calibrating. Refer to LANE CHANGE ASSISTANCE, CALIBRATING .
- Mount
- For the bumper cover
- Bolt
- 4 Nm
- Quantity: 2
- Shield
- Bolt
- 4 Nm
- Quantity: 2
- Mount
- For the bumper cover
- Lane Change Assistance Control Module 2 -J770-
- Removing and Installing. Refer to LANE CHANGE ASSISTANCE CONTROL MODULE -J769- / -J770-, REMOVING AND INSTALLING .
- Calibrating. Refer to LANE CHANGE ASSISTANCE, CALIBRATING .
- Shield
- Lane Change Assistance Warning Lamp in Driver Exterior Rearview Mirror -K233-
- Removing and Installing. Refer to LANE CHANGE ASSISTANCE WARNING LAMP IN DRIVER AND FRONT PASSENGER EXTERIOR REARVIEW MIRROR -K233- / -K234-, REMOVING AND INSTALLING .
- Bolt
- Tightening specification -Item ) Bolt
- Shield
- Mount
- For the bumper cover
- Control Module for Left Front Object Detection Radar Sensor -J1088-
- Removing and Installing. Refer to CONTROL MODULE FOR LEFT AND RIGHT FRONT OBJECT DETECTION RADAR SENSOR -J1088- / -J1089-, REMOVING AND INSTALLING .
- Calibrating. Refer to FRONT CORNER RADAR, CALIBRATING .
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.