Very dim A/C display. Anyone experienced issues before?
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,261
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From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
Very dim A/C display. Anyone experienced issues before?
Hi guys,
Quick question…
I just picked up my car from the dealer this morning. It’s been with them for two weeks. I had several things repaired/replaced under warranty.
Just as a side note for bragging purposes, I was fortunate enough that my entire panoramic roof assembly was replaced. You know how most pano roofs have issues closing? That “machine gun” noise that it creates because of the motor. Well… my Daimler Chrysler extended warranty approved the requested repair and ended up changing the whole thing. The cost of that alone was $7,481. My out of pocket cost was $200 for the deductible.
Anyways… back to the issue at hand. I had other things replaced as well… certain cooling hoses and other items relating to the A/C and heater. As I was on my way home, I turned on the A/C (which works fine), but I noticed that the A/C display is so dim that you can’t even tell that it’s on. I haven’t called my advisor yet, cause I want to see if anyone has experienced such an issue. The display isn’t “white” like it should be. It’s so dim that it blends in with the background.
If anyone happens to know what may be causing this or possibly have experienced this in the past, please let me know if there is a quick solution to this.
Any help is very much appreciated.
Thank you in advance.
Quick question…
I just picked up my car from the dealer this morning. It’s been with them for two weeks. I had several things repaired/replaced under warranty.
Just as a side note for bragging purposes, I was fortunate enough that my entire panoramic roof assembly was replaced. You know how most pano roofs have issues closing? That “machine gun” noise that it creates because of the motor. Well… my Daimler Chrysler extended warranty approved the requested repair and ended up changing the whole thing. The cost of that alone was $7,481. My out of pocket cost was $200 for the deductible.
Anyways… back to the issue at hand. I had other things replaced as well… certain cooling hoses and other items relating to the A/C and heater. As I was on my way home, I turned on the A/C (which works fine), but I noticed that the A/C display is so dim that you can’t even tell that it’s on. I haven’t called my advisor yet, cause I want to see if anyone has experienced such an issue. The display isn’t “white” like it should be. It’s so dim that it blends in with the background.
If anyone happens to know what may be causing this or possibly have experienced this in the past, please let me know if there is a quick solution to this.
Any help is very much appreciated.
Thank you in advance.
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Joined: Jun 2006
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
It was probably around twilight when it happened and it's simply your car auto headlights coming on and switching your dash to night settings. Turn off your head lights when it happens next time to check if the dash goes back to day time brightness. If that's it just adjust your night time display from the dash knob or turn off the night time settings through command.
Senior Member
Joined: Aug 2009
Posts: 320
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From: North NJ
06 E55(SOLD), 03 E500(SOLD)
I had the same issue after having the pano roof in my E500 replaced (CPO warranty). I brought it back to the dealer to have them fix it. SA said it was a damaged wire to the overhead control panel.
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Joined: Jul 2013
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From: Charleston, SC
E55K, Black on Black. C63, Black on Black. SRT-10 NightRunner 363of400
The tape wire that goes from the sunlight sensor to the area where the controls for the roof are has been damaged. Mine is doing the same thing. Let us know what your fix is.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,261
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From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
I think you and i really are having the same problem. I'm going to bring it back to the dealer sometime this week and see what they can do. Not only is my A/C display practically gone, my radio doesn't brighten/dim during the day/night. The dealer technicians might have possibly screwed something up when re-installing the parts above the rear view mirror.
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Joined: Jun 2006
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From: South CA (LA, 818) & North CA (SJ, 408)
2003 E500
This happened to me a few years back and it has never happened again since. It was so dim that it was illegible and it was like that for a few days. It suddenly went away and has not happened since. I never did figure out what caused it.
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Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
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From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
I'm just waiting for my service advisor to return my call so that i can bring the car in for re-inspection of the poor work that was done.
A pet peeve of mine... is when a customer takes his/her car into the dealer and receives it back with additional problems the car never had.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
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From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
The dealer found the issue. When the technician re-installed some of the wiring directly above the rear view mirror, one of the thin connectors (i apologize, i don't recall what it's called) got jammed between something and was cut.
The dealer ordered a replacement part and will install it free of charge since the problem was caused on their end. Total time to completely replace is estimated to be between 20-30 mins.
Problem solved. Good thing I didn't need a new A/C climate control cluster.
As a side note for those who are experiencing the same problem, the best way i can describe the part is... it's a really thin, white, flat electrical band with black connectors on both ends. I wanna say its about a 10-12 inches or less.
Hope this helps.
The dealer ordered a replacement part and will install it free of charge since the problem was caused on their end. Total time to completely replace is estimated to be between 20-30 mins.
Problem solved. Good thing I didn't need a new A/C climate control cluster.
As a side note for those who are experiencing the same problem, the best way i can describe the part is... it's a really thin, white, flat electrical band with black connectors on both ends. I wanna say its about a 10-12 inches or less.
Hope this helps.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,261
Likes: 21
From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,261
Likes: 21
From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
UPDATE
The dealer replaced the connector piece and the problem was solved.
No more dim A/C display.
The radio down auto dims and brightens accordingly.
Here is the part number below. Not sure how much it cost.
The dealer replaced the connector piece and the problem was solved.
No more dim A/C display.
The radio down auto dims and brightens accordingly.
Here is the part number below. Not sure how much it cost.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2008
Posts: 1,261
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From: SoCaL (LA / OC)
E55 AMG (SOLD), EvoSport CLK (SOLD), 2013 GsxR 750 (SOLD)
Wow... that's a major loss on my end. 
I spent more gas money driving to the dealership several times just for them to inspect the issue, then come back a 2nd time for installation. And this was after getting my car back from $11k+ of warranty work.
Cheap fix for everyone else.
I spent more gas money driving to the dealership several times just for them to inspect the issue, then come back a 2nd time for installation. And this was after getting my car back from $11k+ of warranty work.
Cheap fix for everyone else.
Newbie
Joined: Apr 2013
Posts: 7
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From: Utah
W211 E55
Worked like a champ
This fix worked perfect for me. Was having issues with dim climate control. Found out that white flat wire had been cut (probably from windshield company). Replaced and now she lights up like a champ.
Thank you you all for posting this simple but awesome fix
Thank you you all for posting this simple but awesome fix
Member
Joined: May 2012
Posts: 98
Likes: 19
From: Orange County, CA
08 E350
I've got a similar issue. Climate control is always very dim but my headlights and interior lights work as they should. I also believe that my windshield wipers sensor works as intended. Would it be the same cable that is being discussed in this thread? What is the part number? Thank you for your help.
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2006 E55 AMG
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From: NZ
2004 E55 AMG, 2006 CLS63, 2004 ML55, 2014 E350 sport
Newbie
Joined: Feb 2026
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2016 E 400 Cabriolet
Hi guys,
Quick question…
I just picked up my car from the dealer this morning. It’s been with them for two weeks. I had several things repaired/replaced under warranty.
Just as a side note for bragging purposes, I was fortunate enough that my entire panoramic roof assembly was replaced. You know how most pano roofs have issues closing? That “machine gun” noise that it creates because of the motor. Well… my Daimler Chrysler extended warranty approved the requested repair and ended up changing the whole thing. The cost of that alone was $7,481. My out of pocket cost was $200 for the deductible.
Anyways… back to the issue at hand. I had other things replaced as well… certain cooling hoses and other items relating to the A/C and heater. As I was on my way home, I turned on the A/C (which works fine), but I noticed that the A/C display is so dim that you can’t even tell that it’s on. I haven’t called my advisor yet, cause I want to see if anyone has experienced such an issue. The display isn’t “white” like it should be. It’s so dim that it blends in with the background.
If anyone happens to know what may be causing this or possibly have experienced this in the past, please let me know if there is a quick solution to this.
Any help is very much appreciated.
Thank you in advance.
Quick question…
I just picked up my car from the dealer this morning. It’s been with them for two weeks. I had several things repaired/replaced under warranty.
Just as a side note for bragging purposes, I was fortunate enough that my entire panoramic roof assembly was replaced. You know how most pano roofs have issues closing? That “machine gun” noise that it creates because of the motor. Well… my Daimler Chrysler extended warranty approved the requested repair and ended up changing the whole thing. The cost of that alone was $7,481. My out of pocket cost was $200 for the deductible.
Anyways… back to the issue at hand. I had other things replaced as well… certain cooling hoses and other items relating to the A/C and heater. As I was on my way home, I turned on the A/C (which works fine), but I noticed that the A/C display is so dim that you can’t even tell that it’s on. I haven’t called my advisor yet, cause I want to see if anyone has experienced such an issue. The display isn’t “white” like it should be. It’s so dim that it blends in with the background.
If anyone happens to know what may be causing this or possibly have experienced this in the past, please let me know if there is a quick solution to this.
Any help is very much appreciated.
Thank you in advance.
thanks so much, dim display on AC driving me crazy.
Last edited by Beachmark9@gmai; Feb 12, 2026 at 01:05 PM. Reason: Correction
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Joined: Feb 2026
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2016 E 400 Cabriolet
