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.
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HOMESERVICE MANUALSMERCEDES BENZ2025SPRINTER 3500XD 2D CAB CHASSIS EXTENDED, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1190 (COMPONENT TESTING)COMPONENT TESTINGMASTER WINDOW ADJUST SWITCHCOMPONENT TESTING PROCEDURE
2025 Mercedes Benz Sprinter 3500XD 2D Cab Chassis Extended, RWD
Component Testing Procedure
2025 Mercedes Benz Sprinter 3500XD 2D Cab Chassis Extended, RWDSECTION Component Testing Procedure
WARNING: This page is about a different car, the 2006 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
MASTER WINDOW ADJUST SWITCH COMPONENT TESTING
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Power and Ground Checks Before Any Other Tests | 8 (C504b) and 4 (C504a) 8 (C504b) and 3 (C504a) 8 (C504b) and 2 (C504a) 8 (C504b) and 1 (C504a) 8 (C504b) and 5 (C504b) 8 (C504b) and 8 (C504a) 8 (C504b) and 7 (C504a) 8 (C504b) and 6 (C504a) 8 (C504b) and 5 (C504a) 6 (C504b) and 7 (C504b) |
All Eight Window Switches (at rest) | Open circuit |
| 5 (C504b) and 4 (C504a) 5 (C504b) and 3 (C504a) 5 (C504b) and 2 (C504a) 5 (C504b) and 1 (C504a) 5 (C504b) and 8 (C504a) 5 (C504b) and 7 (C504a) 5 (C504b) and 6 (C504a) 5 (C504b) and 5 (C504a) |
All Eight Window Switches (at rest) | Closed circuit | |
| Left front window circuit | 8 (C504b) and 5 (C504a) | Up | Closed circuit |
| 5 (C504b) and 6 (C504a) | Â | - | |
| 8 (C504b) and 6 (C504a) | Down | ||
| 5 (C504b) and 5 (C504a) | |||
| Right front window circuit | 8 (C504b) and 7 (C504a) | Up | Closed circuit |
| 5 (C504b) and 8 (C504a) | |||
| 8 (C504b) and 8 (C504a) | Down | ||
| 5 (C504b) and 7 (C504a) | |||
| Left rear window circuit | 8 (C504b) and 2 (C504a) | Up | Closed circuit |
| 5 (C504b) and 1 (C504a) | Â | ||
| 8 (C504b) and 1 (C504a) | Down | ||
| 5 (C504b) and 2 (C504a) | |||
| Right rear window circuit | 8 (C504b) and 3 (C504a) | Up | Closed circuit |
| 5 (C504b) and 4 (C504a) | |||
| 8 (C504b) and 4 (C504a) | Down | ||
| 5 (C504b) and 3 (C504a) |
RENDER: 1.0x
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.