Good morning,
Only 2 weeks into the CF world, I'm very grateful to the CF forum for some great advice and support. My latest issue was a non-functioning fuel gauge. As advised here I turned to YOUTUBE for the SLK fuel sending unit removal video and tackled the problem. Here's what I found:

1. Unlike the SLK, the CF fuel tank and sending unit can be accessed by simply removing the trunk floor mat and lifting the carpeted panel at the rear of the trunk.



2. Once exposed, the fuel sending unit is easily removed using a highly specialized tool to turn the device 1/4 turn counterclockwise and carefully lifting entire unit straight out.


3. Once removed, you can easily access the 2 wires on the underside of the unit and use an ohmmeter to test the resistance of the sending unit in various positions to ensure it is actually working - ohms should be between 0 - 250 as you move the float.



4. In my case, the good news is the sending unit is working properly. The bad news is the fuel gauge is still reading O!
5. Next step was to remove the left dash vent panel and (barely) reach into the back of the instrument cluster. Although the left connector was tight and appeared to be seated properly, I unlatched it and disconnected it. In the blind, I reinserted the connector into the instrument cluster, made certain it was seated, and relatched it. For whatever reason the CF gods smiled down on me and the fuel gauge is now working properly.

Again, thanks to you the CF community for your support, Mike