CLS53 48V Malfunction Message with CEL
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Junior Member
Joined: Jan 2019
Posts: 26
Likes: 4
CLS53 AMG
CLS53 48V Malfunction Message with CEL
Driving in stop-and-go traffic the other day, and all of a sudden strange messages began to appear on my dash. "48V Battery" and "Malfunction". As soon as the errors appeared, the car seemed to bog down, and would not go past 30 MPH (even if you floor it). Seemed scary at the time considering I was on the highway...
In any case, I managed to get into the emergency lane and power cycled the car. Once restarted, I noticed the check engine light was on but the car appeared to be functioning as expected. I immediately drove it straight to the dealer on my way home and left it to be diagnosed.
1,700 miles on the clock... Anyone else having similar symptoms?
In any case, I managed to get into the emergency lane and power cycled the car. Once restarted, I noticed the check engine light was on but the car appeared to be functioning as expected. I immediately drove it straight to the dealer on my way home and left it to be diagnosed.
1,700 miles on the clock... Anyone else having similar symptoms?
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Joined: Aug 2019
Posts: 1
Likes: 0
Mercedes E53
E53 48V Battery Malfunctioning error
I was driving on the highway as well, when my ac started blowing hot air suddenly after about 20min of driving. I pulled the car to the side of the road and restarted the engine, and the ac was working fine.
After about 4 hours again the ac was blowing hot air, and this time I got an error message on my dashboard saying "The 48V battery is malfunctioning"; so I pulled over again and restarted the engine, was working fine again.
I called MB support and they said to bring in the car after 3 days (In the UAE, public/private sectors closed for Eid)
Strange thing is, I just took delivery of my car literally 2 weeks ago, only 500kms on the car!
Waiting to take it to the service centre and get it checked ASAP!
Any update on yours after you got it checked?
After about 4 hours again the ac was blowing hot air, and this time I got an error message on my dashboard saying "The 48V battery is malfunctioning"; so I pulled over again and restarted the engine, was working fine again.
I called MB support and they said to bring in the car after 3 days (In the UAE, public/private sectors closed for Eid)
Strange thing is, I just took delivery of my car literally 2 weeks ago, only 500kms on the car!
Waiting to take it to the service centre and get it checked ASAP!
Any update on yours after you got it checked?
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 26
Likes: 4
CLS53 AMG
I was driving on the highway as well, when my ac started blowing hot air suddenly after about 20min of driving. I pulled the car to the side of the road and restarted the engine, and the ac was working fine.
After about 4 hours again the ac was blowing hot air, and this time I got an error message on my dashboard saying "The 48V battery is malfunctioning"; so I pulled over again and restarted the engine, was working fine again.
I called MB support and they said to bring in the car after 3 days (In the UAE, public/private sectors closed for Eid)
Strange thing is, I just took delivery of my car literally 2 weeks ago, only 500kms on the car!
Waiting to take it to the service centre and get it checked ASAP!
Any update on yours after you got it checked?
After about 4 hours again the ac was blowing hot air, and this time I got an error message on my dashboard saying "The 48V battery is malfunctioning"; so I pulled over again and restarted the engine, was working fine again.
I called MB support and they said to bring in the car after 3 days (In the UAE, public/private sectors closed for Eid)
Strange thing is, I just took delivery of my car literally 2 weeks ago, only 500kms on the car!
Waiting to take it to the service centre and get it checked ASAP!
Any update on yours after you got it checked?
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From: North Scottsdale, AZ
'71 Pinto
MBUSA released Service Campaign 2020110017 software for the on-board electrical system battery control unit does not correspond to the current series production configuration, dealer will update.
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2020 CLS 450 4MATIC
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