2019 C63S not starting
Thread Starter
Junior Member
Joined: Dec 2019
Posts: 27
Likes: 7
c63S
2019 C63S not starting
Hello people
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
Newbie
Joined: Jan 2020
Posts: 1
Likes: 0
2019 C63 coupe
Hello people
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
When I did AMG driving academy 4 of the 10 people in my group either had or were in the process of having their cars bought back so clearly there are quality issues as 4/10 ventures into the area of statistical impossibility for a modern car manufacturer
First and last Mercedes I'll ever own
Super Member
Joined: Mar 2019
Posts: 600
Likes: 97
From: NYC area
2019 C63S Coupe
Hello people
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
i have a 2019 C63S which I purchased in June. Since then the car has broken down 3 times on me in exactly the same circumstances.
when I have stop/start engaged and I’m stationary at the lights and I am looking to move off the car just turns off.
when I try to start the car the lights turn on (no warning or error messages) but the car doesn’t start at all. Electrics and dash work but the car doesn’t turn over.
on two occasions when this has happened it has taken 30 minutes to start the car. In between I’ve called breakdown service however by the time they turn up (60 minutes) the car has already started.
the third time it’s happened it took 6 minutes to start.
ive given it to merc but they can’t replicate the fault and don’t know why it’s occurring. They have stripped the starter motor and that is fine.
wondering if anyone else has experienced this and if their car got fixed. It’s currently with merc again. Or am i the unlucky one who got given a bad apple?
any help would be greatly appreciated.
Out Of Control!!
Joined: Nov 2018
Posts: 11,467
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
Potentially a malfunctioning Auto Start/Stop. I pretty much always turn it off right after starting the car, but I have occasionally left it on or turned it back on when I find myself being stopped for longer periods. Mercedes actually has one of the best Auto Start/Stop. They stop the engine with one cylinder in the firing position, so when the engine needs to be started again, they can simply inject fuel and kick it off. That's why it's quite smooth even on small engines. I recently had a 2020 CLA loaner for about three weeks, and I left it on the entire time. It didn't bother me at all. The car was so quiet that between on and off there was not much difference. In fact that 4-banger sounds like crap when it's running, so turning it off at a stop was actually more pleasant. Compared to most other cars with Auto Start/Stop where the whole car shakes every time it starts, the MB implementation isn't actually as annoying.
Senior Member
Joined: Jan 2019
Posts: 439
Likes: 74
From: California
2019 AMG C63S
I too turn off Auto Start/Stop as soon as I turn on the engine. I have mapped controlling Auto Start/Stop to one of the two buttons on the left-hand side of the steering wheel.
However whenever I've left it on, it has been mostly smooth albeit with a little lag (half a second). It is however easy to plan for it in traffic lights and stop signs, by trying to inch forward a little bit (which will turn on the engine) before going full gas.
However whenever I've left it on, it has been mostly smooth albeit with a little lag (half a second). It is however easy to plan for it in traffic lights and stop signs, by trying to inch forward a little bit (which will turn on the engine) before going full gas.
Out Of Control!!
Joined: Nov 2018
Posts: 11,467
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
I too turn off Auto Start/Stop as soon as I turn on the engine. I have mapped controlling Auto Start/Stop to one of the two buttons on the left-hand side of the steering wheel.
However whenever I've left it on, it has been mostly smooth albeit with a little lag (half a second). It is however easy to plan for it in traffic lights and stop signs, by trying to inch forward a little bit (which will turn on the engine) before going full gas.
However whenever I've left it on, it has been mostly smooth albeit with a little lag (half a second). It is however easy to plan for it in traffic lights and stop signs, by trying to inch forward a little bit (which will turn on the engine) before going full gas.
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Thread Starter
Junior Member
Joined: Dec 2019
Posts: 27
Likes: 7
c63S
I'm curious, do you have the Driver Assistance Pkg? I was stuck in some nasty traffic today leading up to a 4-way stop intersection and was stopped a lot. I decided to engage Auto Start/Stop and I had DISTRONIC and Auto Steering active to let the car do all the inching up. I noticed this before and didn't remember, but the engine restarts as soon as the car in front starts moving, so it appears it uses the radar sensor as well to decide when to start the engine to minimize lag. Not sure if it only does it with DISTRONIC engaged or always. Have to play with it a bit more.
MB are struggling to find the fault which is worrying.
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Out Of Control!!
Joined: Nov 2018
Posts: 11,467
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
Unfortunately, if there are no helpful fault codes pointing to the issue, and it's an unknown issue and on top of that it occurs intermittently, these things are very hard to diagnose.
Thread Starter
Junior Member
Joined: Dec 2019
Posts: 27
Likes: 7
c63S
i also have a squeaky steering wheel which they are trying to fix. It squeaks when I go over speed humps. Any advise on that lol
Senior Member
Joined: Jan 2019
Posts: 439
Likes: 74
From: California
2019 AMG C63S
I'm curious, do you have the Driver Assistance Pkg? I was stuck in some nasty traffic today leading up to a 4-way stop intersection and was stopped a lot. I decided to engage Auto Start/Stop and I had DISTRONIC and Auto Steering active to let the car do all the inching up. I noticed this before and didn't remember, but the engine restarts as soon as the car in front starts moving, so it appears it uses the radar sensor as well to decide when to start the engine to minimize lag. Not sure if it only does it with DISTRONIC engaged or always. Have to play with it a bit more.
I just turn it off to prevent unnecessary engine start/stop cycles. I feel that the only real reason MB has added this is for higher MPG / slightly reduced emissions.
Newbie
Joined: Mar 2020
Posts: 2
Likes: 1
C63
Hi, I have exactly the same issue - 2019 C63S (in Australia).
Mine took about 10 mins to start, stuck at a dangerous corner, similar to your case - stopped at the lights, didnt come back on, and multiple attempts to restart didn't work.
Tool it to Merc, they ran "diagnostics" and apparently nothing wrong at all. The service adviser's comments were " i'd be very disappointed if you had to bring it back, it must be a once-off". Problem for me is, because it's real and can't be diagnosed or rectified, every time I drive I am worried it's going to do it again.
I discussed this with a mate of mine who owns multiple AMGs and is a mechanic (and the merc technicians agree) it's definitely the stop/start malfunctioning. I am thinking it might be an idea to contact Merc deirectly, at least explain the exact circumstances this occurs.
Mine took about 10 mins to start, stuck at a dangerous corner, similar to your case - stopped at the lights, didnt come back on, and multiple attempts to restart didn't work.
Tool it to Merc, they ran "diagnostics" and apparently nothing wrong at all. The service adviser's comments were " i'd be very disappointed if you had to bring it back, it must be a once-off". Problem for me is, because it's real and can't be diagnosed or rectified, every time I drive I am worried it's going to do it again.
I discussed this with a mate of mine who owns multiple AMGs and is a mechanic (and the merc technicians agree) it's definitely the stop/start malfunctioning. I am thinking it might be an idea to contact Merc deirectly, at least explain the exact circumstances this occurs.
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Joined: Sep 2016
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From: Australia
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
For now, does turning the Start/Stop Function off eliminate the problem so you can at least drive it without being paranoid that it will "stop"?
Man I'll tell you now, there is no way I would be able to rest with an issue like this especially in a $160,000 AUD vehicle. I would be escalating this sh*t until it's fixed or i'll go straight to the media and camp outside the dealership I got it from until it's either fixed or bought back
Mercedes and their quality issues I swear. From exhaust flap rattles to vehicles not even turning on in the middle of traffic. Come on.
Newbie
Joined: Mar 2020
Posts: 2
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C63
Hey thanks for the reply - exactly, I was hoping they'd suggest a firmware update at least. It happened only once so I won't know if turning off the auto start stop actually helps, I was brave enough to try it out in the drive way, couldn't reproduce the problem like that
!
I contacted AMG, awaiting to see if they take it any more serious than the local dealers. Mercs used to have a very bad reputation about reliability
this is my 4th C63 so none of them had any issue this nasty...
Let's see - good to know I didn't dream the whole thing up!
!I contacted AMG, awaiting to see if they take it any more serious than the local dealers. Mercs used to have a very bad reputation about reliability
this is my 4th C63 so none of them had any issue this nasty...Let's see - good to know I didn't dream the whole thing up!
Thread Starter
Junior Member
Joined: Dec 2019
Posts: 27
Likes: 7
c63S
Hey thanks for the reply - exactly, I was hoping they'd suggest a firmware update at least. It happened only once so I won't know if turning off the auto start stop actually helps, I was brave enough to try it out in the drive way, couldn't reproduce the problem like that!
I contacted AMG, awaiting to see if they take it any more serious than the local dealers. Mercs used to have a very bad reputation about reliability this is my 4th C63 so none of them had any issue this nasty...
Let's see - good to know I didn't dream the whole thing up!
!I contacted AMG, awaiting to see if they take it any more serious than the local dealers. Mercs used to have a very bad reputation about reliability
this is my 4th C63 so none of them had any issue this nasty...Let's see - good to know I didn't dream the whole thing up!
Junior Member
Joined: Sep 2018
Posts: 52
Likes: 9
C63S
Same thing happened to me in my 2019 at a red light. I assumed at the time that it happened because I was low on gas and my gas light was on (which was the only reason I had the start/stop setting on; I always turn it off when driving or drive in Race mode). After reading this thread, I think it may be a larger issue
