SL/R107: Aux fans run anytime ign. is on.
Thread Starter
Newbie
Joined: Apr 2016
Posts: 1
Likes: 0
1987 560SL
Aux fans run anytime ign. is on.
My aux fans run any time the ignition is on. This started after replacing AC
dryer and the green pressure switch ( w/ aftermarket) as soon as the switch is unplugged fans stop. My question is: could this be the wrong switch? Does anyone have a good MB # for the original The # I have (002-820-52-10) is a dead end..
Thanks...
dryer and the green pressure switch ( w/ aftermarket) as soon as the switch is unplugged fans stop. My question is: could this be the wrong switch? Does anyone have a good MB # for the original The # I have (002-820-52-10) is a dead end..
Thanks...
Super Member
Joined: Sep 2015
Posts: 725
Likes: 189
From: Chicago area
2015 E400 and 2015 GLK350
I'm not familiar with your model car, but many of these fan switches are designed so that their "default" failure mode turns the fan on all the time. This way, if the switch fails, at least the engine won't overheat and suffer damage.
It could also be the wrong switch.
It could also be the wrong switch.
