Keyless Go

[tanuie]

Hi, I have just bought a CLK 320 2005 it comes with keyless go which does not work, I was told this before buying it which I accept, however are these systems problematic and what is likely the most common cause.
Do you have to have a star diagnostic to tell you the problems.
Me being me I have to have everything working if it's fitted to the car.
Many Thanks.
Terry.

 

[miro]

If the car is factory fitted it is a relatively simple fix.

Areas to probe.
- door locks
- door handles
- door modules
- centre console module
- gear selector
- trunk wiring
- main control module on the rear fuse box

As a safety feature, keyless go stops working if it is broken somewhere. Assuming the car is 100% original and not been tampered with, these faults are uncommon.

Once you identify the fault with a diagnostic you do a software startup process and it all resets itself. It even pops the doors open sequentially to validate the door locks. Cool to see it in the self test.