Electric Sprinter rear ventilation problems

I feel your pain I had a similar freakout with the rear air System diagnostics kept pointing to the flap actuator Check the wiring harness that goes to the rear unit It's a common weak spot Look for any chafing or corrosion on the plug connection This can cause weird issues with the automatic climate Give that a good look before you start spending money

Thanks for the tip Where is that wiring harness located Is it easily accessible or will I need to dismantle half the van to get to it

From what I remember it runs along the side of the van under the trim panels You'll probably need to pop off some of those plastic bits to get a good look If you're not super comfortable with that I'd suggest taking it to a workshop They'll have the right tools and know exactly where to look Better than breaking a bunch of clips and still not fixing the problem But definitely tell them you suspect the wiring harness connection to the flap actuator Might save you some diagnostic time

Thanks I appreciate the help I took it to a workshop mentioned the wiring harness and you nailed it It was a corroded connector on the flap actuator They cleaned it up and everything's working perfectly again You saved me diagnostic fees