Mmy tod check light keeps flashing,check engine light stays on,brake light comes on and off,it drives fine at times then goes into 4 wheel drive and i cant make turns. there is no mechanic within 100 miles of where i live that knows what or how to fix it.

Hello. It seems your B.M.W.'s PCM (Powertrain Control Module), inadvertently, 'engaged' 4WD on it's own; without your knowledge. Disconnect your Beemer's battery and wait 10-15 minutes then reconnect it. Start engine and drive your Beemer somewhere. If it stays in 4WD, then, another 'reboot' has to be done. Good luck and keep me informed; if you want to.

second post. and no year.
now its more clear, its ONLY an engine swap.

what drive line, skip engine, tell trans and if the car is TOD
or part time 4wd only transfer case, that takes looking...




got TOD? see photo at end for TOD dash.??????
its called Torque on Demand , a factory option
some have it others dont. no year stated so......
see those tires there. left side?


what are you attempting sure 4wd
but WHERE, what are wheels tires touching.???????
dirt
snow
ice
sand
mud
grass.
or hard dry pavement. (dry means ice free)
we cant guess. and it very important with all part time 4wd, (jeep like)
it's not ALL WHEEL DRIVE, not at all. with PT.

to test PT ,ask. and how not to damage the transfer case.

scan it yet?
the light flashing means just that. (scan me)( im sick...)

some times they tie in another circuit to a check engine light , i have that happen with the emergency brake light on and engine check light

The place to start would be to scan your vehicle's computer network fo fault codes. Until this is done, there is nobody in the world that can do anything more than "GUESS" what could be causing your problems.

First have the brakes checked, the abs and 4wd lights need to be checked, this is done with a scan tool, the computer stores codes telling you what part of what system has failed this will help in finding the problem, the noise my be a bad wheel bearing and has gotten bad to the point it has damaged the abs sensor and has made the lights come on , this is a guess you will need to have the computer scanned to get the codes. hope this helps, good luck.

my 99 honda crv, 2 wheel drive. turns on..drives for a period of time, then ramdomly shuts off and then i have trouble turning it on..but it does turn on eventually. it does this everyday

get a code reader and see what codes it pulls

what kind of vehicle is it

I had the same problem which was diagnosed incorrectly 3 times
Could be one of 2 things you may want to check
Have a tech read your codes
Have the ABS Control Module checked by a technician. If that is ok then make sure they look at the altenator
In my case, I was getting voltage spikes that were shorting out system controls -the ABS Control Module and the battery, etc. Once they put in a new altenator, the problem was fixed.