W204 estate rear park assist still bleeps despite replacing faulty sensors.

glennLet

New Member
Joined
Feb 28, 2022
Messages
6
Reaction score
1
Location
cambridge UK
Your Mercedes
W169 07 1.4 soon to add a C250 CDi estate 11 plate 2.1 diesel
Hi All,

My C250 estate had the bleep and two sets of red lights when put into reverse. front sensors work well.

I cleaned the rear sensors, no joy, then I used my phone's microphone to see which ones were 'ticking' and discovered the middle two were silent.
I replaced them, all four now 'tick' yet when I put it into reverse, I still get the bleep and 4 red lights inside.

Does anyone have any other tips/idea's before I book it in to go on the star diagnostics...? Would the original fault code need to be reset...?

Many thanks in advance, and really enjoying my first C250.

G
 

mercman111

Senior Member
Joined
Nov 13, 2015
Messages
485
Reaction score
63
Location
ledbury
Your Mercedes
2005 clk 350 petrol
the original fault needs the ignition swithed on about 5 times
 

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