2017 C43 AMG “Service Required. Do not shift gears. Visit Dealer”
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Joined: Mar 2023
Posts: 25
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From: Las Vegas, NV
C43 AMG
2017 C43 AMG “Service Required. Do not shift gears. Visit Dealer”
A couple days ago I went to the grocery store in my C43. No problems. I go to leave, and the car just freaked out on me. The gauge cluster lit up like a Xmas tree. I parked the car again and shut it off. Tried starting again and the motor wouldn’t start and I got a message “Service Required. Do not shift gears. Visit Dealer”
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
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From: Omaha, NE
'16 AMG GTS, '21 AMG GLE53
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A couple days ago I went to the grocery store in my C43. No problems. I go to leave, and the car just freaked out on me. The gauge cluster lit up like a Xmas tree. I parked the car again and shut it off. Tried starting again and the motor wouldn’t start and I got a message “Service Required. Do not shift gears. Visit Dealer”
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
Junior Member
Joined: Oct 2018
Posts: 55
Likes: 8
From: Maryland USA
2024 GT 55
This is an interesting thread! It elicits a couple of questions for me: without something like what the OP described happening, how do you know when the battery needs replacing? Is there a recommended interval? Mine is now 5 years old...
I was getting a message on the dash about my battery - was intermittent for a week or so depending on how long my drive was and I was putting it on a charger as well to ensure it was truly a problem. Dealer replaced it free of charge at the 3 year mark.
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2024c43
Freak out
A couple days ago I went to the grocery store in my C43. No problems. I go to leave, and the car just freaked out on me. The gauge cluster lit up like a Xmas tree. I parked the car again and shut it off. Tried starting again and the motor wouldn’t start and I got a message “Service Required. Do not shift gears. Visit Dealer”
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
I called roadside assistance and when the guy showed up, he disconnected and reconnected the battery. Car started up and drove home fine, minus a check engine light. Got the “service required…” message again. Later on (after 8 hours being parked) I tried to start the car again and it started up fine but still had a check engine light.
the next morning I drove (CEL still on but no issues driving) it to an independent MB shop and was told my ECU is bad and needs replacement. They said they weren’t sure if the ECU was still under warranty for 8 years 80k miles (my car has 68k miles fwiw) but they said if it was under warranty, that they’d refer me to my local Mb dealer to replace it
anyone else’s car have an electrical freak out like that?
yeah my 2024 c43 did the same thing I could drive it but nothing worked. Apparently they replaced the battery cable and sensor on the cable . But I think it was an update that fixed it! Knock on wood! Haven’t had a problem since. It was like a ghost in the machine . Like the old air wolf series moffett ghost.
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