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.
Reading off static data
With this function programmed data can be read off. For the rear electronic module (REM), this indicates primarily which relays should be installed.
The following statistics can be read off:
- relay, left rear door locking
- relay, left rear door unlocking
- relay, rear door deadlock
- relay, right rear door locking
- relay, right rear door unlocking
- relay, tailgate pop-up
- relay, fuel tank filler cap locking
- relay, fuel tank filler cap unlocking
- relay, rear fog lamp
- relay, rear fog lamp, German version and trailer
- relay, back-up (reversing) lamp
- relay, rear windshield heating
- relay, increased X-supply
- relay, tailgate wiper
- relay, folding rear head restraint
- relay, 15I power supply
- relay, rear air conditioning (A/C)
- relay, gas tank valve
- relay, RMI 15, reserve
- relay, RMI 11, reserve
- relay, RMI 12, reserve.
With this function programmed data can be read off. For the rear electronic module (REM), this indicates primarily which relays should be installed.
The following statistics can be read off:
- relay, left rear door locking
- relay, left rear door unlocking
- relay, rear door deadlock
- relay, right rear door locking
- relay, right rear door unlocking
- relay, tailgate pop-up
- relay, fuel tank filler cap locking
- relay, fuel tank filler cap unlocking
- relay, rear fog lamp
- relay, rear fog lamp, German version and trailer
- relay, back-up (reversing) lamp
- relay, rear windshield heating
- relay, increased X-supply
- relay, tailgate wiper
- relay, folding rear head restraint
- relay, 15I power supply
- relay, rear air conditioning (A/C)
- relay, gas tank valve
- relay, RMI 15, reserve
- relay, RMI 11, reserve
- relay, RMI 12, reserve.
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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.