Airconditioner screen blank
Thread Starter
Newbie
Joined: Jan 2009
Posts: 10
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2006 c230
Airconditioner screen blank
Can someone send me in the right direction. I have tried searching in vain. My battery went dead. I charged it. Now my aircon screen is blank. Checked all the relevant fuses and they all good. The fan still blows but I have no control over it. Seems like there should be some kinda reset.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,258
Likes: 209
From: Boston North Shore
2001 CLK320 Cabrio
I would suggest rechecking the HVAC fuses.
Specifically, in fuse block 1 (located in the engine compartment):
#20 (powers the push button control module)
#25 (powers the blower motor)
#26 (powers the push button control module)
#38 (powers the auxiliary fan)
Note: Best way is to use a multimeter (e.g. sometimes an internal break is difficult to see).
When you charged the battery, was the battery still connected to the vehicle electrical system or was it isolated? Some chargers supply in excess of 14 volts, which can damage sensitive electronic circuits.
Specifically, in fuse block 1 (located in the engine compartment):
#20 (powers the push button control module)
#25 (powers the blower motor)
#26 (powers the push button control module)
#38 (powers the auxiliary fan)
Note: Best way is to use a multimeter (e.g. sometimes an internal break is difficult to see).
When you charged the battery, was the battery still connected to the vehicle electrical system or was it isolated? Some chargers supply in excess of 14 volts, which can damage sensitive electronic circuits.
Last edited by Serndipity; May 27, 2017 at 12:44 PM.
Thread Starter
Newbie
Joined: Jan 2009
Posts: 10
Likes: 0
2006 c230
Tx for the reply. Checked all fuses with meter. All ok. Battery was connected when charging, supposedly a smart charger. Anyhow do you think the screen is blown. The fan blows when it wants. My aircon does need charging for a while now but never affected anything before.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,427
Likes: 100
From: Florida
2002 CLK 55 AMG cabriolet Eurocharged
out of curiosity, unplug the connector on the receiver drier for pressure sensor and see if it comes back.
I have seen this before. cant remember what caused it though. cycle the light switch as well.
There is a calibration procedure once it comes back
I have seen this before. cant remember what caused it though. cycle the light switch as well.
There is a calibration procedure once it comes back
Last edited by GatorMB; Jun 18, 2017 at 01:03 AM. Reason: added content
