C180 W203 Lambda Fuse / Reset Switch

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newcomam

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Mar 25, 2014
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C180
Hi everyone, first post here.

My cars engine warning light went on recently so I took it to my garage and they said that there was a problem with the lambda sensor. Said they could replace it for £400/500 and would also check the fuse/switch/wires to it which usually fail. He mentioned something about them being located under the drivers seat.
Does anyone know how I might check this switch / wire myself as he did indicate the the lambdas were probably fine as the car was driving / responding ok.

Many thanks in advance,
Andy
 
I am not sure if the lamda probe has a fuse, check your handook to see if one is listed. Regardless it should not cost anywhere near £400/£500 to replace.

An OE quality probe would be around £100 or less and fitting should be fairly straightforward on a ramp so how they justify this figure I do not know. The fact that he thinks it is fine but suggests you spending that amount of money would more than worry me!

I would suggest a visit to an MB specialist with the Star computer to properly diagnose it, where are you based?
 
Last edited:
Hi David thanks for the advice, I'm based near Watford.
 

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