Help! Auto-electric Cock Up

[brian_H]

Morning everyone.

I am hoping the PH crew can help me out on an electrical issue I have.

It's on a 2006 Merc CLK 320CDI.

I bought a modern replacement for the existing Double Din head unit, one with built in nav, streaming etc.

The old unit was working fine just old tech and no bluetooth.

I removed the old unit with no issues and the new unit is a "one big block connector" plug and play connection.

Plugged it in and it doesn't work.....checked what I could but it was getting late so I decided to put the old unit back in for now and come back to it next weekend. The issue is the old unit now doesn't work either so I presume I have somehow shorted out something while swapping over.

I have checked the fuses and all look ok. What else could I have killed?

I am hoping to get an Auto spark to come out and look at it on Friday but looking for some clues in the mean time.

Everything else still works.

Thanks for any help or suggestions.

Cheers

Brian

PS: Can anyone recommend an Auto Electrician in the Chester area?

[Rough101]

Get a big illuminated magnifier and make sure the pins are all good and straight in the plug.

If you’ve a meter, check for power on the plug https://pinoutguide.com/Car-Stereo-Mercedes-Maybac...

[brian_H]

Thanks very much for the information and the advice. Tonight's job!

:-)

[Sparky137]

I have a 2005 CLK 320 and had exactly the same problem when trying to fit a Kenwood system. After a lot of research I found that post 2005 (Audio 10 & Audio 20) systems cannot just be replaced with a different head unit unless you use a control interface to decode the CAN information. this should work: https://incartec.co.uk/product/Mercedes-C-CLK-E-Cl...

I bought one but didn't bother fitting it in the end, I just put the original stereo back in and connected my phone via its aux input. Good enough for me.

Still got the interface somewhere. Maybe one day I'll try it but as the car hasn't been used for two years its not a priority.