Blower Motor Prob-not the regulator?
Thread Starter
Newbie
Joined: Jun 2005
Posts: 12
Likes: 0
From: Alpharetta (Atlanta), Georgia, USA
2000 E320, Obsidian Black/Palomino, European Delivery 125+ mph on Autobahn
Blower Motor Prob-not the regulator?
Searching like a good boy I found a lot of info on blower problems. I did the diagnostics thing with the HVAC buttons and found the control voltage reads 6v but still no blow. The blower has gotten slower over the last few mos. and never comes on full anymore. Sometimes after driving 10 minutes it will start blowing. With 100 F temps its kind of a priority now. Help? I was about to order the s-Class regulator but since it is reading 6v I think it might be the motor, but I don't know jack. Thanks in advance!
Thread Starter
Newbie
Joined: Jun 2005
Posts: 12
Likes: 0
From: Alpharetta (Atlanta), Georgia, USA
2000 E320, Obsidian Black/Palomino, European Delivery 125+ mph on Autobahn
I did the ac diagnostic routine at http://www.eclassbenz.com/acdiag which says I have low refridgerant. But when it blows it is cool aand the HVAC diagnostic routine says I have 10 bar of ref pressure.
Here are the rest of the numbers
1 - 103
2 - 98
3 - 105
4 - 105
5 - 107
6 - 170
7- 10
8 - 111
9 -
10 - 6
11 - 2.9
12 - 3.7
20 - 3.2
21 - 42
22 - 0
23 - 32
24 - 13.5
40 - 164
41 - 85
42- 104
43 - 136
Here are the rest of the numbers
1 - 103
2 - 98
3 - 105
4 - 105
5 - 107
6 - 170
7- 10
8 - 111
9 -
10 - 6
11 - 2.9
12 - 3.7
20 - 3.2
21 - 42
22 - 0
23 - 32
24 - 13.5
40 - 164
41 - 85
42- 104
43 - 136
Super Member
Joined: Nov 2004
Posts: 588
Likes: 1
'98 E320 4Matic, '85 380SL
Your numbers are fine. The diagnostic utility only diagnosis warm air problems. If you have cold air, don't bother with it.
Your problem is undoubtedly your blower regulator. Yes, your climate control unit is sending 6V to the regulator. The control unit very rarely fails. The problem is that the blower motor regulator is not responding properly to the voltage input. This is a very common problem. There's a good DIY pictorial guide on this forum for replacing the regulator.
Your problem is undoubtedly your blower regulator. Yes, your climate control unit is sending 6V to the regulator. The control unit very rarely fails. The problem is that the blower motor regulator is not responding properly to the voltage input. This is a very common problem. There's a good DIY pictorial guide on this forum for replacing the regulator.
Thread Starter
Newbie
Joined: Jun 2005
Posts: 12
Likes: 0
From: Alpharetta (Atlanta), Georgia, USA
2000 E320, Obsidian Black/Palomino, European Delivery 125+ mph on Autobahn
Muchas Gracias Sir! I'll be ordering an s-class regulator from autohauzaz.com and using the procedure tony described in his thread. I appreciate your encouraging response.
