Aftermarket head unit on a sprinter

MattBea

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Jun 19, 2020
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Your Mercedes
Sprinter 513 2.1 2009
Hi guys, hoping someone has had experience with this and solved it or generally just knows what the issue is.

Fitted an aftermarket head unit (Sony) to my 2009 sprinter and it works fine with no key in ignition but as soon as ignition is turned on all power disappears from headunit and it won’t turn back on.

Does anyone know the fix?

Matt
 

AnthonyUK

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Apr 17, 2018
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Location
Alton, Hants
Your Mercedes
C240 estate 2002
Hi guys, hoping someone has had experience with this and solved it or generally just knows what the issue is.

Fitted an aftermarket head unit (Sony) to my 2009 sprinter and it works fine with no key in ignition but as soon as ignition is turned on all power disappears from headunit and it won’t turn back on.

Does anyone know the fix?

Matt

It sounds like it isn't wired up correctly. There should be a live to keep it powered during sleep and a switched live from the ignition to wake it up.
 

Blobcat

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Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Hello and welcome,

I'd be checking the permanent live and ignition switched live in the connectors in the van wiring. Sounds like something isn't doing what it should.
 
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