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 MANUALSBMW2009335DREPAIR AND DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORSWITCHES
2009 BMW 335d
Electrical Component Locator: Switches
2009 BMW 335dSECTION Switches
SWITCHES LOCATION
| Component | Location |
|---|---|
| Air Distribution Microswitch (Y715) | Center of dash. See Figure. |
| Back-Up Light Switch (S8511) | Rear of transmission. See Figure. |
| Brake Fluid Level Switch (B18a) | Left rear of engine compartment. See Figure. |
| Brake Light Switch (S29) | Under left side of dash. See Figure. |
| Clutch Switch Module (S805a) | Under left side of dash. See Figure. |
| Control Valve, Refrigerant Compressor (Y2a) (4.0L) | Right front of engine. See Figure. |
| Coolant Level Switch (S63b) | Right side of engine compartment. See Figure. |
| Headlight Washer Relay (K6) | Under right side of dash. See Figure. |
| Hood Contact Switch (S19a) | Left rear of engine compartment. See Figure. |
| Neutral Position Switch (B456) (4.0L) | Side of transmission. See Figure. |
| Oil Pressure Switch (B2008) (3.0L Diesel) | Left Front Of Engine. See Figure. |
| Oil Pressure Switch (B6231) (3.0L) | Left side of engine compartment. See Figure. |
| Oil Pressure Switch (B6231) (3.0L Turbo) | Left rear side of engine. See Figure. |
| Oil Pressure Switch (B6231) (4.0L) | Top of engine. See Figure. |
| Parking Brake Warning Switch (S31a) | Under center console. See Figure. |
| Park/Neutral Position Switch (Y19) | Under shifter, in center console. See Figure. |
| Passenger Airbag Deactivation Switch (S559) | Right end of dash, near right front door. See Figure. |
| Selector Lever Position Switch (S227) | Under shifter, in center console. See Figure. |
| Steptronic Switch (S224) | Under shifter, in center console. See Figure. |
| Washer Fluid Level Switch (S136a) | Behind right front wheel. See Figure. |
RENDER: 1.0x
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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.