New Combi Relay causes switching fault

Martin Wildsmith

New Member
Joined
Jul 17, 2005
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Location
Preston, Lancs. UK.
Your Mercedes
W203 C220CDi Estate
I have recently replaced combi relay A 201 821 0047 with A 201 821 02 47 as I had a fault with the indicators not working correctly. The new relay is a different part no. as MB (and my EPC) say this is now the correct part no. for my W124 E250D.

The trouble is that when the radio is left on and the ignition is switched off operating the hazard warning lights switches the radio back on again. This definitely did not happen with the old relay.

Has anybody experienced the same problem? What is the solution? Has anybody got a wiring diagram that covers the new relay?

VIN WDB1241261C049479

Radio is an MB OEM fit.

Many thanks in advance for any help.
 


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