It's not working unless I jiggle/press in on the connector. Then it works for a few minutes. Any idea what causes this and how to fix? Replace the connector or pins? Or is something loose on the blower?
Well, maybe it is the motor. I took it out and powered it up with alligator clips in the connector. Still running erratically. Looks like Rock Auto has replacements from Nissins at $109 or Hella for $119. China vs. France.
Had a closer look at mine. The housing is dated May 2008 and the fan, Dec. 2007. The car is a 2011. Hard to believe it sat 3 years before being put in a car at the factory. Maybe somebody put in a used one at some time.
The design may not be updated but the components may have been. Better brushes, springs, armature etc. If they were going bad so often, Mercedes would get on Behr to make improvements or they would use another supplier. Don't really care as I'm selling the car soon.
I bent the contact spades on mine so they have a bit of a twist to them and it seemed to help make better contact. If I could fit under there, would replace the wiring harness connector. If it has been making bad contact, it may have been burnt and might not make a good connection.