runaway climate control? - The Unofficial BMW M5 Messageboard (m5board.com)

brad · 17th May 2002, 17:44

This is happening in my 2000 M5 and my friend's 2000 M5 too. After a few minutes the fan races up to maximum speed even though the indicator says it's still at level 2 or 3. Then every 30 seconds or so, it comes back down for a few seconds, then races up again. This happens no matter what fan speed I set.

Anyone else seen this problem? It's more than annoying.
-Brad

ycchan · 17th May 2002, 17:50

BMWs electrical gremlins again

steveB · 17th May 2002, 18:42

sounds like a bad hvac resistor. i have the same problem and am having it fixed next week. real simple fix--takes about 20 minutes to replace

AJ · 17th May 2002, 20:27

yes. my 2000 had that problem too. simple fix and dealers are fully aware of it. it is called the "hvac stage resistor" or something like that.

alex
02 gts
few other cars

young-nyc · 17th May 2002, 20:43

yeah a friend of mine had the same problem on is MY2000 M5 as well...got it fixed at the dealer

Diamond Dave · 17th May 2002, 23:00

You guys are all correct about the resistor. Happened to my M5 and my Sainted Mother's 540i. Steve is right that it takes about 20 minutes to replace. Believe it's located under the dash where the passenger footwell is.

Don't drop off the car. Wait for this quick repair. Under warranty, too!

Regards,

DWP

Jim Dolan · 18th May 2002, 05:28

Threads like this make this board worthwhile.

slief · 18th May 2002, 05:33

Had it happen to mine, and the dealer fixed while I waited. took about 5 minutes. Cracked me up though, turn it on low and it would blow like a blizzard with the lights registering low!
Scott

tfung · 18th May 2002, 11:05

had the same problem with our old 740 once.... got it fixed at the dealer for free...