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.
1999 Mercedes Benz E430FACTORY OEM SERVICE PROCEDURE
Section 7 (Combination Control Module)
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
- Trouble Shooting
- Windshield Wipers Inoperative
- Windshield Wiper Wash Function Inoperative
- Windshield Wiper Interval Wipe Function Inoperative
- Windshield Wiper Low Speed Function Inoperative
- Windshield Wiper High Speed Function Inoperative
- Windshield Wipers Will Not Turn Off (Ignition On)
- Rain Sensor Function Inoperative
- Entrance/Exit Lights Do Not Illuminate
- Front Dome Light Does Not Illuminate
- Front Dome Light Does Not Turn Off After 5 Seconds
- Entrance/Exit Lights Do Not Turn Off After 5 Minutes
- Rear Dome Light Does Not Illuminate
- Rear Window Defogger Inoperative
- Rear Window Defogger Led Inoperative
- Turn Signal System Inoperative
- Self-Diagnostic System
- System Tests
- Test 1: Circuits 30E & 31E
- Test 2: Circuit 15
- Test 3: Circuit 15R
- Test 4: Circuit 30C
- Test 5: Circuits 30A & 31A
- Test 6: Circuits 30B & 31B
- Test 7: Vehicle Speed Signal
- Test 8: Circuit 31
- Test 9: Wiper Switch
- Test 10: Wiper Switch Wash Circuit
- Test 11: Wiper Switch Intermittent Circuit
- Test 12: Wiper Switch Low Speed Circuit
- Test 13: Wiper Switch High Speed Circuit
- Test 14: Wiper Motor Circuit 31
- Test 15: Wiper System Circuit 31B
- Test 16: Rain Sensor Circuit
- Test 17: Entrance/Exit Light Circuit
- Test 18: Front Dome Light Circuit (8 Second Delay)
- Test 19: Front Dome Light Circuit (5 Minute Delay)
- Test 20: Entrance/Exit Light Circuit (5 Minute Delay)
- Test 21: Rear Dome Light Circuit
- Test 22: Heated Rear Window Circuit
- Test 23: Heated Rear Window Voltage Supply From PSE Control Module
- Test 24: Heated Rear Window Relay Voltage Output
- Test 25: Heated Rear Window Led Indicator Circuit
- Test 26: Turn Signal System Circuit 49
- Test 27: Turn Signal System Circuit 49A
- 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.