W210 300TD gearbox and diagnostic issues...

SHynes

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Your Mercedes
E300 Turbo Diesel Elegance 1997 OM606.962
First time posting, done some hunting and can’t find a definitive answer.

I recently invested in a 1997 E300TD. When I test drove it it was jammed in second gear which I have since found out is limp mode. So I went and invested in a snap on adapter to fit the diagnostic port in the 210’s. No communication what so ever. No control units will talk to my machine at all. Now when I first seen the car it wasn’t starting and after some digging I found the ECU box had been leaking and was filling with water. Blew all the water out with compressed air and sprayed up with WD-40. Attempted start again and started first turn after lying up for 2 years.

My question is, is there any way to read faults from the 722.6 in my car without the diagnostic port? Or a way to fix it? Checked all fuses including those in ECU box all ok. Has anyone else had an issue like this? The adapter talks 100% with my E300D parts car so no issues there.

Thanks in advance.
 
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SHynes

New Member
Joined
Apr 13, 2020
Messages
2
Reaction score
2
Your Mercedes
E300 Turbo Diesel Elegance 1997 OM606.962
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Thanks Silver_star! Checked TCU and the big multi-plug for contamination and found nowt... Found a few corroded pins at TCU due to water ingress. Could that have fried my TCU? Thanks!
 

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