Mercedes S550 2007 w221Comand died

Page may contain affiliate links. Please see terms for details.

michels007

New Member
Joined
Jan 23, 2021
Messages
3
Location
Lebanon
Car
Mercedes S550 4matic
Hi everyone, just noticed that the comand on my s550 w221 has completely died - no picture, no sound, no nav, black screen. This happened after two days non stop raining with flood water inside the front driver carpet. I checked most of the fuses related to the comand and display (73, 99, 119, 122, 131) but all are working fine. Any idea about other solutions? Thank you.
 
Have seen some similar issues where they tested Comand through Star Diagnosis.
 
Hi everyone, just noticed that the comand on my s550 w221 has completely died - no picture, no sound, no nav, black screen. This happened after two days non stop raining with flood water inside the front driver carpet. I checked most of the fuses related to the comand and display (73, 99, 119, 122, 131) but all are working fine. Any idea about other solutions? Thank you.
Flood water came up?
Or rain came down?

Is the car interior and engine compartment dry yet? If not, get the wet vac out now. (I know someone who had thousands of pounds worth for Range Rover electrical faults for more than a year as a result of leaving bags of damp grass cuttings in garden waste bags in his RR for just a week)

If flood water has been in the car, the Comand will only be a small part of your problems.

If water is in your engine or fuel tank you are in BIG trouble. It will all depend on depth of flooding. (Check oil)

An Independent garage could investigate, but a specialist vehicle electrician has greater experience and is better equipped to identify and resolve.
 
Last edited:
Well the water came on the front driver carpet only from the drains after two hard rainy days.
Now it's dry but the problem persists on the comand display after checking all the comand fuses; still have black screen (no radio, no nav, no phone)
 
Did not notice you car flooded. I would take it to a garage to inspect.
 
So “probably” just a blocked drain resulting in some kind of drainage overflow into the cabin area. It’s a common general (non-MB) fault in heavy rain.
 
Any luck, same has happened to W216.........
Hi, I have 2007 W216, CL500 owned since new, and after water ingress into n/sf footwell due to blocked drain hole I now have NTG3 comand issues. Initially whist driving the comand turned itself off, after turning back on twice it kept going off again. After finishing my journey I noticed the water ingress. Days later and after drying out the footwell the comand would no longer “wake up” and had to be started manually by the switch on the lower centre console. Although I initially had sound and the comand display worked the comand heater controls couldn’t be accessed along with the dynamic seats, and the steering wheel volume controls and linguatronic were u/s in addition to the C/S/M switch in the lower centre console. Comand would also shut down after 30mins as it didn’t receive the signal to say the car was running. After removing n/s carpets and seat there appears to be no water that has made its way through vent ducts or wiring ducts to the rear of the interior. Car has been stood inside for 3 weeks now and after disconnecting both batteries, checking fuse 122 voltage and 12v to the rear of comand we now have a completely dead comand unit. I.e no comand display, no lights on comand and no reset possible either. I have checked multiple forums and tried the following - X30/20 connector wires, Fuse 122 and all other fuses checked. Xentry system suggests limited/no CAN signal from/to comand A40/1/ upper control panel UCP and Central Gateway CGW. I guess my question is whilst having limited knowledge of the Xentry system is it likely to be the comand itself that is faulty or even possibly the rear HK amplifier that’s has in someway got condensation/water damage or shorted out? Is there a way to check if the rear amp is faulty without swapping it out (will a can loop on the amp connector start comand operating if the amp was at fault) or is it a case of just trying another amp? DAS doesn’t suggest an amp fault but with so many control units not responding I am probably not ruling it out.
I guess I could do with either trying another HK amp and/or a comand unit (the latter being a Becker BE7071) unless anyone else can give some further guidance. Appreciate any help or advice.
PS. Had the W216 for 13 years, amongst other vehicles, and have done 125k miles In it and still love the car to this day! Always my go to vehicle.
 
Would really appreciate any help with this. I don’t suppose anyone else has an amp or Comand lying around to allow me to test the system?
 

Users who are viewing this thread

Back
Top Bottom