SL/R231: Will not go into Park when stopped
Thread Starter
Junior Member
Joined: Apr 2015
Posts: 36
Likes: 4
2003 SL55 / 2013 SL550
Will not go into Park when stopped
Help! 2013 R231, Will not go into park when I stop. Have to turn it off in while drive, it then goes to N, then I can turn it back on and put it in park... finally. It does not happen all the time, just every once in a while.Someone said it might be a sensor by the brake peddle, and suggested a slam down on the peddle a few times to see if it helps. It did... it stopped the issue for a few months, or at least it seems to have helped for a few months. Today its back with a vengeance.
Anyone have that issue? Know what is causing it?
If it is a sensor by he brake peddle, can you let me know what the part number is? How to replace? any video out there on it?
Thanks in advance!
Anyone have that issue? Know what is causing it?
If it is a sensor by he brake peddle, can you let me know what the part number is? How to replace? any video out there on it?
Thanks in advance!
Senior Member
Joined: Jan 2019
Posts: 475
Likes: 157
From: Philadelphia area
2014 SL65 AMG, 2018 S560
Help! 2013 R231, Will not go into park when I stop. Have to turn it off in while drive, it then goes to N, then I can turn it back on and put it in park... finally. It does not happen all the time, just every once in a while.Someone said it might be a sensor by the brake peddle, and suggested a slam down on the peddle a few times to see if it helps. It did... it stopped the issue for a few months, or at least it seems to have helped for a few months. Today its back with a vengeance.
Anyone have that issue? Know what is causing it?
If it is a sensor by he brake peddle, can you let me know what the part number is? How to replace? any video out there on it?
Thanks in advance!
Anyone have that issue? Know what is causing it?
If it is a sensor by he brake peddle, can you let me know what the part number is? How to replace? any video out there on it?
Thanks in advance!
Another possibility is the auxiliary battery. It's used to power the shifter so that the car can be put in neutral when the main battery is dead.
Senior Member
Joined: Jan 2019
Posts: 475
Likes: 157
From: Philadelphia area
2014 SL65 AMG, 2018 S560
Thread Starter
Junior Member
Joined: Apr 2015
Posts: 36
Likes: 4
2003 SL55 / 2013 SL550
Hi Everyone, its an electronic shifter. Previously had the TCM replaced. Before a mechanic said there is some sensor to determine if the brake is on or not, and if it is not working properly it will not let you shift into park. I was told basically to slam on the brake peddle a few times to see if that helped and it seemedto help for a few months.
So My hope is its a sensor that is on the peddle and should be easy to fix.
The brake lights go on, its not that sensor.
Anyone, any mechanic have an idea what it might be?
So My hope is its a sensor that is on the peddle and should be easy to fix.
The brake lights go on, its not that sensor.
Anyone, any mechanic have an idea what it might be?
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MBWorld Fanatic!
Joined: Jun 2012
Posts: 1,022
Likes: 231
From: In the minds of others rent free.
SL 400
I do not know what the issue is, however the next time the car doesn’t go into park via the P button simply open the drivers door and the car will auto go into park. Much easier than what you have been doing until you can get the repair completed.
Keep us updated on the cause of your issue.
Keep us updated on the cause of your issue.
Hi Everyone, its an electronic shifter. Previously had the TCM replaced. Before a mechanic said there is some sensor to determine if the brake is on or not, and if it is not working properly it will not let you shift into park. I was told basically to slam on the brake peddle a few times to see if that helped and it seemedto help for a few months.
So My hope is its a sensor that is on the peddle and should be easy to fix.
The brake lights go on, its not that sensor.
Anyone, any mechanic have an idea what it might be?
So My hope is its a sensor that is on the peddle and should be easy to fix.
The brake lights go on, its not that sensor.
Anyone, any mechanic have an idea what it might be?
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Banned
Joined: Nov 2025
Posts: 477
Likes: 187
From: US
Mercedes SL R231
I know that when the car is moving, you cannot put it in Park. When accidentally hitting the Park button while driving, a warning pops up telling me I have to be stopped to put it in Park. I think hooking up a scanner, like XENTRY or LAUNCH, and looking at the live data might help. I would look at the tire speed and requested transmission gear when trying to put it in Park.
Junior Member
Joined: Aug 2025
Posts: 15
Likes: 8
2013 SL550
Any updates on this?? My car just started doing this exact same thing. One thing I have also noticed when I am in drive, and I try to put it in park and it doesn't go... It then will also not go into neutral or reverse at that point. However, if I am driving it will go into neutral or reverse at any time without any issues. It's not until I press "P" and then I can't change anything at all.
thoughts??
thoughts??
Member
Joined: Mar 2026
Posts: 117
Likes: 50
Any updates on this?? My car just started doing this exact same thing. One thing I have also noticed when I am in drive, and I try to put it in park and it doesn't go... It then will also not go into neutral or reverse at that point. However, if I am driving it will go into neutral or reverse at any time without any issues. It's not until I press "P" and then I can't change anything at all.
thoughts??
thoughts??
