Random error messages appearing on board
Thread Starter
Newbie
Joined: Nov 2022
Posts: 9
Likes: 2
Class A
Random error messages appearing on board
Hi all,
I have a problem with my Class A, 2014. It happened few times now, when I am driving I start getting 'PRE-SAFE Functions limited' message. Then suddenly, I start getting all errors randomly : EPS inoperative, park assist inoperative, Active bonnet inoperative, Park Break inoperative etc...Also the car starts to suddenly act unresponsive, sensors start flashing, whenever I put turn signal (left or right) I should put them multiple times in order to function, switching from D to R becomes irresponsive also and I should do it multiple times to function....
If I turn my car off, it won't turn on again. If I leave it for a day or 2, it works again very normal ! Then suddenly the exact same happens again. I visited the garage which passed the obd tests and they got no fault codes!
For info, whenever I try to turn the car on the message 'Anti-theft protection activated' appears. And I get 'Risk of rolling error...'.
It seems that the car is displaying all the errors on screen randomly...
Any idea what this could be? and how to approach this ?
Thanks!
I have a problem with my Class A, 2014. It happened few times now, when I am driving I start getting 'PRE-SAFE Functions limited' message. Then suddenly, I start getting all errors randomly : EPS inoperative, park assist inoperative, Active bonnet inoperative, Park Break inoperative etc...Also the car starts to suddenly act unresponsive, sensors start flashing, whenever I put turn signal (left or right) I should put them multiple times in order to function, switching from D to R becomes irresponsive also and I should do it multiple times to function....
If I turn my car off, it won't turn on again. If I leave it for a day or 2, it works again very normal ! Then suddenly the exact same happens again. I visited the garage which passed the obd tests and they got no fault codes!
For info, whenever I try to turn the car on the message 'Anti-theft protection activated' appears. And I get 'Risk of rolling error...'.
It seems that the car is displaying all the errors on screen randomly...
Any idea what this could be? and how to approach this ?
Thanks!
Last edited by bilalelaly; Nov 15, 2022 at 04:45 PM.
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
I see you also posted in A-Class forum. Found this bulletin that may or may not be relevant although it does not reference A-Class it 'may' provide a lead. I suggest choosing a shop that uses Xentry (MB diagnostics) to erase stored codes & run quick test to pull current codes + provide diagnostic assistance.
Thread Starter
Newbie
Joined: Nov 2022
Posts: 9
Likes: 2
Class A
I see you also posted in A-Class forum. Found this bulletin that may or may not be relevant although it does not reference A-Class it 'may' provide a lead. I suggest choosing a shop that uses Xentry (MB diagnostics) to erase stored codes & run quick test to pull current codes + provide diagnostic assistance.
Thanks for your reply.
I managed to get the errors on odb please find below:
MBWorld Fanatic!
Joined: May 2018
Posts: 6,600
Likes: 6,547
From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Water intrusion at CAN BUS distribution block is also a possibility.
If big rain been somehow related, well..................
If big rain been somehow related, well..................
Thread Starter
Newbie
Joined: Nov 2022
Posts: 9
Likes: 2
Class A
They say it's the ECU that is faulty and has to be replaced... I'm really confused and not sure about that.. Is what they're saying logical?
MBWorld Fanatic!
Joined: May 2018
Posts: 6,600
Likes: 6,547
From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Yes, very low battery charge can make the modules issue weird warnings/DTC
Get a proper scanner or MB Xentry, find out those DTC are issued by which modules ?
