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 Q8 Premium PlusFACTORY OEM SERVICE PROCEDURE
Overview - Control Module For Adaptive Cruise Control
- Cover
- With Heating Element for Adaptive Cruise Control Radar Sensor - Z185-
- Removing and Installing. Refer to Heating Element for Adaptive Cruise Control Radar Sensor - Z185-, REMOVING AND INSTALLING .
- Control Module for Adaptive Cruise Control -J428-
- Removing and Installing. Refer to Control Module for Adaptive Cruise Control -J428-, REMOVING AND INSTALLING .
- Adjusting. Refer to RADAR SENSOR (Control Module for Adaptive Cruise Control -J428-), ADJUSTING .
- Cover
- Retaining Plate
- Removing and Installing. Refer to RETAINING PLATE FOR Control Module for Adaptive Cruise Control -J428-, REMOVING AND INSTALLING .
- Bolt
- 4 Nm
- Quantity: 4
- Clip
- Must be replaced when the stud bolt is removed
- Replacing. Refer to CLIP ON Control Module for Adaptive Cruise Control -J428-, REPLACING .
- Quantity: 3
- Stud Bolt
- Quantity: 3
- Note the adjustment dimension. Refer to Installing - Measure the dimension -a- at all stud bolts using the : VAS6335 and correct if necessary. .
- Clip
- Quantity: 2
- Open version
- Cannot be removed without being damaged
- Clip
- Closed version
- Cannot be removed without being damaged
- Note the installation position
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.
