Technical no power

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Technical no power

doberkid

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i returned home 2 days ago evrything was fine .Went to start yesterday and no power.Checked battery which was full but no power to anything .Does anybody have any ideas what i can do?
 
i returned home 2 days ago evrything was fine .Went to start yesterday and no power.Checked battery which was full but no power to anything .Does anybody have any ideas what i can do?
Can you provide some vehicle details?
 
i put battery charger on and it said full
Don't rely on what a battery charger says, as it can often mean it cannot put any, or any more charge into battery, so may not mean battery fully charged.
Also batteries can be working one day and completely duff the next if short out internally.
Have you got a multimeter?
If so set it to DC volts and put it across the terminals of the battery should be around 12.5 volts, then do same test from positive on battery and the other probe on chassis of vehicle, then do same test but to metal of engine.
If any discrepancies check for damaged earth wires from battery, also check battery terminals are secure.
 
i dont have a multimeter so cant do that but i have removed battery cleaned up all terminals and have now put evrything back and it started i will try again tomorrow and see if it still starts
 
i dont have a multimeter so cant do that but i have removed battery cleaned up all terminals and have now put evrything back and it started i will try again tomorrow and see if it still starts
Sounds like a result, but check for any battery connections that may have been disturbed which have got it going , but no guarantee it will keep going reliably until you find the reason in the first place.:)
 
On the x244 and later models there is a fuse board (B099) mounted on the battery positive see attached pdf file. The orange 150A mega fuse supplies the engine bay fusebox (B001), which in turn supplies the LHS cab fusebox (B002), That covers the essential functions, while optional central locking, electric windows, and mirrors, have supplies from the RHS cab fusebox (B101).

If using a tool on the battery fuse board or battery positive terminal, standard advice is to remove the battery negative connection first. I would also take care with the main M6 terminal on the engine bay fusebox.

With the battery negative disconnected, check battery positive post clamp, F70f, and The M6 nut on the engine bay fusebox tightness.

Earthing. In automotive installations the chassis forms the return path for the current, so equally important.

On the x244 model, the battery negative connection descends to the main chassis earth point in front of the RHS engine mounting. The connection is via a flag terminal crimped around the conductor. Internal corrosion has been reported at this terminal, but is rare. The negative cable continues under the intercooler and radiator to terminate on a starter motor fixing stud. This latter connection carries main starter motor and alternator current.

The attached fusebox diagrams are slightly customised, but this is either obvious, or covered by the notes.

Crossing fingers is not an effective substitute for careful examination.
 

Attachments

  • Fusebox 099 Battery.pdf
    186.8 KB · Views: 0
  • Fusebox B001 Engine Bay.pdf
    191.2 KB · Views: 0
  • Fusebox B002 Cab LHS.pdf
    197.1 KB · Views: 0
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