Collision, Traction, & Diff lock Error messages
Thread Starter
Junior Member
Joined: Feb 2020
Posts: 39
Likes: 7
2016 C63s Edition 1
Collision, Traction, & Diff lock Error messages
Hello,
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
Last edited by bpat1017; Jan 26, 2024 at 09:02 PM.
Member
Joined: Jan 2022
Posts: 159
Likes: 42
From: San Diego,CA
2021 AMG C63S, 2008 C300
Hello,
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
Member
Joined: Jan 2022
Posts: 159
Likes: 42
From: San Diego,CA
2021 AMG C63S, 2008 C300
Instead of throwing a sensor at it you should start by diagnosing the ACTUAL codes that are triggering the warning lights. If you give me the codes that are showing up in the modules then I may be able to assist with code set criteria and enabling conditions of the vehicles faults. Best of luck. Sorry for the troubles.
Out Of Control!!
Joined: Nov 2018
Posts: 11,400
Likes: 5,324
From: San Francisco Bay Area
2019 C63CS
As said above, the first step to diagnosing an issue is to read out the actual fault codes. Driver assistance inoperative errors are commonly due to low voltage issues. Given your car has sat for 6 weeks is a good indication that your battery is low, even if it had enough juice left to start the engine. Hook it up to a battery charger and see if the errors go away with a fully charged battery. The TC error is likely related to the differential throwing an error as the differential is an integral part of the traction control. The electronic locking differential is something that many have, since it's been standard on the S models, and they are generally trouble free, however there are some known issues with the early versions in the C63 and AMG GT. Yours being a 2016 means it has one of those problematic early diffs. It's possible that all the errors you are getting are related to low voltage issues, or as said above, whoever did the alignment screwed something up when resetting the steering angle sensor and whatever else needs to be reset on these cars after an alignment.
Last edited by superswiss; Jan 28, 2024 at 07:48 PM.
Thread Starter
Junior Member
Joined: Feb 2020
Posts: 39
Likes: 7
2016 C63s Edition 1
Hello,
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
After reading 30+ threads it seems like I have a rare issue or Not many people have the locking diff option.
Car is 2016 C63s Edition 1
52,000 miles
Sat for about 6 weeks and decided to take it to get an alignment. After the alignment this is when it started. The alignment shop raised the car back up and we both checked to make sure nothing was pinched, lose or bumped. Didn’t find anything
Here are the messages
1.Collision Prevention Assist Plus Inoperative
2.Traction Control Currently Unavailable
3.Electronic Rear Axle Differential Lock Inoperative
These are my observations
Started right up so no battery issues
No engine light
No coolant leaks or smells
No Limp Mode or power cuts
Drives normal
When I turn the ignition on, start the car, or drive I get the same messages.
Wasted my time at the Dealer. After thier diagnosis Ofcourse they don’t know what exactly is causing it. Well My bank account doesn’t have funds for the ole hat playing game. “Well it can be a multiple of things so let’s just go down the check list replacing things until we get it right”
Where I’d like to start. So many people with W205 C classes Non AMG have error messages 1 and 2. Two fixes for that I’ve seen is new battery or collision sensor. Still yet to find a thread of an AMG having this issue with the rear locking diff message.
My theory is if I have a bad collision sensor it is also deactivating the traction control and rear diff locker? Something has to be triggering everything else.
I could be a complete idiot and have no idea what I’m talking about so I am asking the community to please help with any advice.
I did not get the report from the dealer since they are exremely unorganized. Since they didn't have availability to give me a loaner I decided to wait for the car which they forgot to notify they techs of this and let me sit in the lobby for 2 hours until I asked them whats the deal. I was annoyed waiting another 2 hours and just left when they basically didn't know the root cause. Gilbert Mercedes in Az is a complete joke. Anywase I did some research and came across a thread where a gentleman had a bad front wheel sensor, but he wasnt getting an abs code. If you think about it a bad wheel sensor would be grounds for the computer to deactivate collision, traction control, and rear locker. It all works together. I went to Scottsdale Mercedes (Screw Gilbert) and purchased (2) wheels sensors. Even gave me 15% military discount. Awesome place. I changed out the sensors and that did the trick. I wasn't 100% paying atttention, but I want to say the messages went away once I got on the freeway. Yes I could of started out with changing 1 sensor, but Scottdale dealership is an hour from me and I didn't feel like returning a sensor if I got lucky the first time. At this time I can't 100% say if it was the right or left and if it was the wheels sensors. While I had the car in the air I did check all the other sensors and connectors I could see. I have a total of 23 miles without the messages and if it does come back on I will update you all.
Last edited by bpat1017; Jan 29, 2024 at 02:15 AM.
