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.
Remote Receiver Module (RRX)
The remote receiver module (RRX) is on the top of the driver information module (DIM).
The remote receiver module (RRX) is connected to the central electronic module (CEM) via serial communication (LIN). The remote receiver module (RRX) receives the signals transmitted from the remote control and forwards them to the central electronic module (CEM). When a key is in the ignition switch, the Central electronic module (CEM) ignores all messages from the Remote Receiver Module (RRX). This prevents the central locking system from unlocking if a button on the remote control is unintentionally pressed in.
The remote receiver module (RRX) checks for a signal from a remote control 4 times per second.
The receiver is powered by the central electronic module (CEM) and grounded in the right-hand A-post.
NO RELATED
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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.