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.
2002 Mercedes Benz E55FACTORY OEM SERVICE PROCEDURE
Section 16 (Keyless Entry System)
WARNING: This page is about a different car, the 1996 Mercedes-Benz E320 and 1996 Mercedes-Benz E300. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Component Locations
- Transmitter Programming
- Function Tests
- Test Preparation
- Locking Vehicle With Remote Transmitter
- Unlocking Vehicle With Remote Transmitter
- Closing Windows & Sun Roof With Remote Transmitter
- Opening Windows With Remote Transmitter
- Disable Engine With Remote Transmitter
- Enable Engine With Remote Transmitter
- Opening Trunk Lid With Remote Transmitter
- Self-Diagnostic System
- System Tests
- Remote Control Locking (RCL)
- Test 1: RCL Control Module Voltage Supply
- Test 2: RCL Control Module Ignition Voltage Supply
- Test 3: RCL Receiver Voltage Supply
- Test 4: RCL Receiver Remote Signal
- Test 5: RCL Receiver Red Indicator Light
- Test 6: RCL Receiver Green Indicator Light
- Test 8: RCL Control Module Deactivation Output
- Test 9: RCL Control Module Activation Output
- Test 19: Control Line Activation/Deactivation Short To Voltage
- Test 20: Control Line Activation/Deactivation Short To Ground
- Test 21: CAN "L" Data Line Open
- Test 22: CAN "H" Data Line Open
- Test 23: CAN "L" Data Line Short To Voltage
- Test 24: CAN "H" Data Line Short To Voltage
- Test 25: CAN "L" Data Line Short To Ground
- Test 26: CAN "H" Data Line Short To Ground
- Test 27: CAN "H" Data Line Short To CAN "L" Data Line
- Test 28: Left Front Door Lock Switch Output Voltage
- Test 29: Trunk Lid Lock Switch Output Voltage
- Remote Control Locking (RCL)
- Removal & Installation
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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.