Pcn1
Active Member
Last year my R 129 developed a faulty cabin blower fan problem.
Basically it ran fin for while then stopped. When the car was turned off and cooled down it then worked ok again. This has happened a few times, and my google research has suggested the most likely culprit is a faulty resistor pack (or Rheostat) mounted on top of the blower motor itself. Apparently these can fail completely or break down intermittently, as in my suspected case.
So following a YouTube video (although its for a 500 and the layout is slightly different) I'm in the process of removing this item for replacement. So while its apart, is there anything else I should check or replace ? I read motor brushes can sometimes be a problem so replace those too ?
Lastly is this resistor still a MB stocked spare part item, or aftermarket only now ?
Thanks
Basically it ran fin for while then stopped. When the car was turned off and cooled down it then worked ok again. This has happened a few times, and my google research has suggested the most likely culprit is a faulty resistor pack (or Rheostat) mounted on top of the blower motor itself. Apparently these can fail completely or break down intermittently, as in my suspected case.
So following a YouTube video (although its for a 500 and the layout is slightly different) I'm in the process of removing this item for replacement. So while its apart, is there anything else I should check or replace ? I read motor brushes can sometimes be a problem so replace those too ?
Lastly is this resistor still a MB stocked spare part item, or aftermarket only now ?
Thanks