1. Open the hood of your vehicle:
- Pull the hood release lever located in the driver’s footwell and lift the hood fully.
2. Locate the relay module:
- The fuel pump relay is located inside the relay module, which is situated behind the battery compartment on the passenger side.
3. Remove the relay cover:
- To access the relay module, you need to remove the black plastic cover by pushing down on the two locking tabs and lifting the cover off.
4. Find the fuel pump relay:
- Once the cover is removed, you'll see several fuses and relays inside the module. The fuel pump relay is usually marked with "FPR" or "Fuel Pump" and is typically a blue or black colored relay.
5. Check or replace the relay:
- If you suspect the fuel pump relay may be faulty, you can gently pull it out of its socket to check its condition. You can swap the relay with a known-good one to see if it resolves the fuel pump issue.
- If replacing the relay doesn’t fix the problem, you may need further diagnosis and possibly replacement of the fuel pump itself.
Please note: The specific location and appearance of the fuel pump relay may vary slightly depending on the year and model of your SLK 200. Always consult the vehicle owner's manual or a reliable source for specific details on your car.