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Need some help to start fixing my beloved w166 ml350 2014 bluetech.[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img] There was an accidental short across the main battery cable that runs to the rear battery.[img]data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7[/img] Car was running at the time but stopped.
No will turn over but not start - boot wont operate, seats wonts operate, getting active bonnet error, restraint system error. Looks like an ECU issue or blown power fuse maybe.
Disconnected both batteries and left overnight - no joy Havnt found an obvious blown fuse yet.
Any help would be very very appreciated really cant afford a dealership. Any pointers to diagnose to find the fault Anyone have a star scanner they want to practice with
Please help if you can, desperate me
Terry
Last edited by Terry WM; Oct 6, 2023 at 02:53 AM.
Reason: Respect
not sure what fuse could have blown. in caae you didnt know theres another fuse panel next to the battery under the passenger seat. at least my vehicle has a fuse panel there 2012 ml350 blutec. i had to take the passenger seat out to get to it.
Boost say they have 3 fuse boxes, in reality they have 7!
The fuse that blew was inside the prefuse box under he floor on the RHS, drivers side in my case. IT was a 150amp fuse that supplies power to the rear.
I had to lift the carpet, and floor cover, then remove the assembly, take it apart, replace the fuse and reinstall, - now all good. ( except playing around I broke the pyro fuse connector in the engine bay, trying to find a new one.).
The fuses are fairly common from electronic stores, Had to do a little ream with a file to open the bolt holes took all of 1 min.
Not the cars fault at all it did the job protecting itself. I connected an Anderson plug near the two bar for an electric winch. The winch had an issue hat blew the fuse. I did have a circuit breaker in line but I think it was a 200amp so the fuse went instead.
I will be downgrading the circuit breaker.
As mentioned learnt a lot, and once you get you head around it, it is not hat complex. So if anyone needs help please yell.
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