[zippy500]

Hello everyone,

My 1st post !

Sorry to jump straight in >

X3 E83 2005 2.0D

My problem is after driving about 6miles the 4x4 light on and brake warning light come on then the car goes into limp mode. if I stop switch off/on lights go out the same happens again after the distance.

This happened straight after I just fitted a plugin tuning box,it plugs into fuel pressure rail and map sensor.

I have switched the unit off now but it is still doing the same thing- very coincidental I think. not sure what to try next.

can anyone help with what i should do next ! Please

Many Thanks
Andy

[zippy500]

Any ideas anyone?

[drivingstud4ubaby]

Did you try unplugging the battery overnight to reset codes? Good luck

[Mikesmith2939]

Get the transfer box oil changed, that can make a difference.