SL/R231: SL65 AMG 2013 ECU, TCU, ABS, ISM Dead..Help?
NO START, NO. CRANK
WITHOUT CHANGING GEAR READ MANUAL
ABS NOT WORKING
NO OIL MEASUREMENT POSSIBLE
AS i Scan with a Thinkcar scanner i get errors ECU is not responding, ABS Not responding, TCU not responding, ISM not responding.
Car does not allow to change gears and is like blocked
Other Modules such as Front SAM or Rear SAM shows no error
Looking for a Pinout Diagram out of A 279 900 19 00 AMG Motronic ECU To find out more about power issues.
Also looking in to web ETM web site, diagrams available but not PINOUT.
Any one with this issues?
ISM DTC U119800
C10087 DTC FOR ECU
U010087 DTC FOR ECU
P060C04 DTC FOR ECU
Plus other errors related from other modules
Any help, is welcome..
Best!
Last edited by MKEDF; Aug 6, 2025 at 01:19 AM.




Battery(ies) status? The car was running, then blocked, then ran again..
Car is not much used, it is over 19,000 miles
Car was driving well and out of the sudden, no start and error messages on dash
Battery is OK and was charged.
Towed to garage to find problems source.
Does the car crank over?




See attached .pdf’s. - note: these large diagrams can be tough to digitize. I’ve made two copies, one reduced, but on a single page. You may need to zoom in or refer to the larger multi page version I’ve also attached.
I can’t overemphasize that most of the problems people post with low mileage vehicles are usually something basic. Going down the wormhole, and searching for complex issue’s sometimes leads to circling back to the basics for “the fix”. It’s usually something basic we missed in initial diagnosis….
I’m not saying you don’t have an electrical issue. Especially since we don’t know history. Just make sure you check & double check all the basics (very well) first.
There are a series of fuses also that you’ll want to check. There are MIDI fuses that are difficult to access that can get damaged by water incursion or bad jump start that will create a no start conditions.
Like these:
https://mbworld.org/forums/sl-class-...ml#post8713675
Good Luck.
Last edited by crconsulting; Aug 6, 2025 at 03:43 PM.
I can’t overemphasize that most of the problems people post with low mileage vehicles are usually something basic. Going down the wormhole, and searching for complex issue’s usually sometimes leads to circling back to the basics for “the fix”. It’s usually something basic we missed in initial diagnosis….
I’m not saying you don’t have an electrical issue. Especially since we don’t know history. Just make sure you check & double check all the basics (very well) first.
There are a series of fuses also that you’ll want to check. There are MIDI fuses that are difficult to access that can get damaged by water incursion or bad jump start that will create a no start conditions.
Like these:
https://mbworld.org/forums/sl-class-...ml#post8713675
Good Luck.
Thank you so much..will work with this input...so valuable!!
I can’t overemphasize that most of the problems people post with low mileage vehicles are usually something basic. Going down the wormhole, and searching for complex issue’s sometimes leads to circling back to the basics for “the fix”. It’s usually something basic we missed in initial diagnosis….
I’m not saying you don’t have an electrical issue. Especially since we don’t know history. Just make sure you check & double check all the basics (very well) first.
There are a series of fuses also that you’ll want to check. There are MIDI fuses that are difficult to access that can get damaged by water incursion or bad jump start that will create a no start conditions.
Like these:
https://mbworld.org/forums/sl-class-...ml#post8713675
Good Luck.
Trending Topics
Front Sam Wiring PE54.21-P-2106-97RKA for Mercedes SL 65 AMG 2013
Engine ECU Wiring PE47.40-P-2101-97RKA For Mercedes SL 65 AMG 2013
Engine is 279 in model 231
thank you so much!
The Best of Mercedes & AMG




Then get someone to crank the engine and measure the voltage. It should not drop below 10 volts.
If the batteries have never been replaced then they are definitely due.
Then get someone to crank the engine and measure the voltage. It should not drop below 10 volts.
If the batteries have never been replaced then they are definitely due.
No Crank and No Gearbox and ABS on Screen, some sort of Limp Mode
Scanner throws ABS, Gearbox, ECU with no response at al...
Looking for ECU Wiring diagram to look for problems




The most basic test checks for proper voltages on the bus wire pairs and for shorts to ground. There's multiple locations where you can access bus distribution points. One is in the passenger footwell. There are lots of videos out there providing the basics of how to check a CAN bus.
If you don't have your own copy of WIS at this point you definitely should consider buying one. You will not get wiring diagrams of the internals of the modules, but it does give extensive wiring diagrams, including all CAN bus interconnections, module pinouts, power distribution, fuses, relays, etc.




CAN E1 is referred to as the "Chassis CAN." I've also attached a diagram of the distribution module (X30/30) for that bus.
And a couple more diagrams showing the location of X30/30 among others. Looks like it's behind the fuse block on left side of dash. Or, it may be under the dash, hard to tell.
Last edited by jmattioni; Aug 8, 2025 at 08:22 AM.
Next step as you recommend is to find an interruption on can bus, right side footwell also has CanBus coupler as well as OBDII conector has another CanBus...we will start from there...Thank You Will keep you posted.
Sorry That we can not find ECU Wiring diagrams or SAM, they are referred on other diagrams, but not available, power is what we are following here, but will work with what we have..Further details to follow!!




Next step as you recommend is to find an interruption on can bus, right side footwell also has CanBus coupler as well as OBDII conector has another CanBus...we will start from there...Thank You Will keep you posted.
Sorry That we can not find ECU Wiring diagrams or SAM, they are referred on other diagrams, but not available, power is what we are following here, but will work with what we have..Further details to follow!!
What you're referring to as the "ECU" is the "Motor Electronics ME/SFI" module, N3/10, which is also on the E1 bus. If you don't find fuse issues then I suggest starting with checking out E1. The X30/30 block for CAN E1 should be somewhere in the vicinity of the OBD connector.
Good luck!
What you're referring to as the "ECU" is the "Motor Electronics ME/SFI" module, N3/10, which is also on the E1 bus. If you don't find fuse issues then I suggest starting with checking out E1. The X30/30 block for CAN E1 should be somewhere in the vicinity of the OBD connector.
Good luck!
Yes right Next to Fuses and OBDII there is a CAN bus connecting point will search as well if no issues found.
Any way if some one has available wiring for ECU and SAM would be appreciated.
Best




Was away from my shop but here you go….
I’ve found sometimes that searching by car instead of VIN can be effective in bringing up documents that won’t show up in VIN searches.
Attached are the documents you’re looking for.
As @jmattioni suggested, and as you know, we can’t overemphasize the necessity of STAR SDS/ XENTRY and WIS for these cars.

Good Luck
Last edited by crconsulting; Aug 8, 2025 at 09:59 AM.
I’ve found sometimes that searching by car instead of VIN can be effective in bringing up documents that won’t show up in VIN searches.
Attached are the documents you’re looking for.
As @jmattioni suggested, and as you know, we can’t overemphasize the necessity of STAR SDS/ XENTRY and WIS for these cars.

Good Luck
We would love to have your support on posting the diagrams related to N3/10 ME-SFI [ME] control unit The ME-SFI [ME] control unit contains the whole engine control.
07.61-P-2101RKA ME-SFI [ME] gasoline injection and ignition system control unit. Sheet1
07.61-P-2101RKB ME-SFI [ME] gasoline injection and ignition system control unit Sheet 2
07.61-P-2101RKC ME-SFI [ME] gasoline injection and ignition system control unit vehicle connector
Thank you so much, still looking for culprit!!




We would love to have your support on posting the diagrams related to N3/10 ME-SFI [ME] control unit The ME-SFI [ME] control unit contains the whole engine control.
.....
Thank you so much, still looking for culprit!!
I had that message 2 years ago on holiday. The car had warnings ECU is not responding, ABS Not responding, TCU not responding, ISM not responding but would run after stopping and restarting if below 2000 rpm
Then finally the same message you have.......and would not start
It went to a small dealership near Naples and they changed the gearbox computer
A week later same problem then it went to a main dealership south of Naples that also sold BMW's !
They changed the nearside (UK) front wheel sensor
All fine back though Munich and on reaching Holland IT HAPPENED AGAIN!
We limped back to London on 2000rpm as it was a Sunday
Once home and talking to Ninja Benz and others here I changed both batteries and the problem has not occurred again in over 6.000 miles
I hope this is of some sense and does not cause you more confusion as logically it could have been just the batteries or those and the wheel sensor or the lot!
Its also a sad reflection of Mercedes dealerships but 3 other I have found to be the same and the STAR dealership I use at Maidstone great
@Bilbo7 is right about the batteries in these cars. They are incredibly temperamental when it comes to voltages. Even if the battery checks out "OK" there still may be problems. The advantage of replacing both batteries at the same time is that you also do a hard reset of all the electronics in the process. I was having a problem where I ended up pulling a fuse and reinserting it and the problem went away (I forget what the problem was, but the fuse was one located in the fuse block behind the passenger seat).
Last edited by JettaRed; Aug 16, 2025 at 08:32 PM.




@Bilbo7 is right about the batteries in these cars. They are incredibly temperamental when it comes to voltages. Even if the battery checks out "OK" there still may be problems. The advantage of replacing both batteries at the same time is that you also do a hard reset of all the electronics in the process. I was having a problem where I ended up pulling a fuse and reinserting it and the problem went away (I forget what the problem was, but the fuse was one located in the fuse block behind the passenger seat).
Second, Replace the batteries. This is the primary reason for issues like this and is easy enough to check. A shop should have spare working batteries around for this type of quick diagnostic deduction.





