2020 S63 Amg sometimes won't start
Although it's had it's issues, I still do love the car.
Though one of the issues is becoming more of a nuisance and was hoping to get some help here.
Periodically the engine won't turn over. Now this has happened 3 times in the last 8 months. The first time I was stuck, I called Mercedes Me said it could be a key fob battery issue. Luckily I was near a mall so I ran inside, changed the key fob battery and it worked! Then a few months later, same thing happened. While I thought that the key fob battery couldn't have died in a few months, I still uber'd to the nearest Mercedes, got my fob battery changed, uber'd back and it worked! Then a few months go by, and the exact same thing happened yesterday. But this time I was in my driveway and I tried both keys and it still wouldn't turn over.
I can unlock, lock the car. I can listen to the radio, use the bluetooth etc. But the engine won't turn on.
It's very frustrating especially because I need my car to drive meeting to meeting. I've been really fortunate it hasn't shut down in between meetings, and I'm hoping to avoid that.
This Friday, I have an appointment with the local Mercedes dealership to run diagnostics and hopefully get it looked at. They're not sure they'll be able to solve the problem.
So I was hoping to get some advice or guidance, especially if anyone else has faced this issue in the past and you may know what's causing it.
I really appreciate any help!
Thank you.
Intermittent issues are the most frustrating for you and the tech.
We want to help but if the car doesn’t have a record of why it didn’t start the tech is left with “this is the most common failure for what you describe.”
Not a wild guess; but when the car is misbehaving for the dealer the tech will be able to follow what is not happening to something that looks more as a certain diagnosis.




Although it's had it's issues, I still do love the car.
Though one of the issues is becoming more of a nuisance and was hoping to get some help here.
Periodically the engine won't turn over. Now this has happened 3 times in the last 8 months. The first time I was stuck, I called Mercedes Me said it could be a key fob battery issue. Luckily I was near a mall so I ran inside, changed the key fob battery and it worked! Then a few months later, same thing happened. While I thought that the key fob battery couldn't have died in a few months, I still uber'd to the nearest Mercedes, got my fob battery changed, uber'd back and it worked! Then a few months go by, and the exact same thing happened yesterday. But this time I was in my driveway and I tried both keys and it still wouldn't turn over.
I can unlock, lock the car. I can listen to the radio, use the bluetooth etc. But the engine won't turn on.
It's very frustrating especially because I need my car to drive meeting to meeting. I've been really fortunate it hasn't shut down in between meetings, and I'm hoping to avoid that.
This Friday, I have an appointment with the local Mercedes dealership to run diagnostics and hopefully get it looked at. They're not sure they'll be able to solve the problem.
So I was hoping to get some advice or guidance, especially if anyone else has faced this issue in the past and you may know what's causing it.
I really appreciate any help!
Thank you.










