Hello all ,
I have a w210 e240 auto.
The problem started with the fuel gauge not working.
In fact it worked at times and at times not at all.
And then suddenly the horns stopped.working.and then i also got a low.coolent level warning on the dash .
And.then.i.got a brake fluid low warning .which went.away abruptly.
i have now taken a look at the wiring under both the front dfront. They seemed okI have taken apart each and every fuse in every place of the vehicle and cleaned and.put them back and also done the same.with the relays but there is no resolution
and now the display.works.intermittently
The horns suddenly started to work of their own
​​​​​​Are the relays to be blamed ?
request help !!

 

Put your car on a star diagnostic system and run a quick test. It is quite possible you have a failing front SAM. Diagnose the problem with the proper diagnostic system before you throw money at the car.