Sprinter ECU location?

[drydockdavies]

Need to send away ECU for testing, under drivers seat?
Can anyone recommend a company to do this and what does it involve? many thanks in advance.
At the end of my tether btw!

413 CDI 2002

 

[clarkmichigan55b]

You try these people.

https://www.ecutesting.com/

 

[drydockdavies]

Thanks. ECU has no faults. ecutesting are returning my ecu. Don't know where to look next! abs edc spinning tyre ebv no speedometer.
I've changed all 4 wheel sensors, new brake light switch, checked fuses. Three garages with different diagnostics including Mercedes expert who concluded it could be anything!! I'm now thinking of sending abs pump away and if that doesn't work send the dash away for testing.