1. Home
  2. BMW Cars and SUVs
  3. help, im getting a trans failure problem

help, im getting a trans failure problem

hi, i have recently got myself a bmw 740 e38 with and intermitantly it give a trans failure message, i took it to a garage and he downloaded the faults, it had a couple of old misfire faults an the trans one.

CODE002:

100 Gear monitoring 1 (2nd-4th gear)

does this mean just 2nd and 4th gears have had it and i need a gearbox refub.

the fault doesnt seem to have any reason to it, it has occured about

4 times in 250miles at different times in auto and sport mode, the mechanic said the box felt fine when he was driving it.

i should also ask, there is a low pitched buzzing coming from below the gear selector panel when the car is switched off and the key is removed, is this normal as i have never had an auto before.

thanks and any help would be appreciated

Reply to
ewan paton
Loading thread data ...

No it usually means you need a new battery.

The noise is probably the electric fan - check it out.

Reply to
R. Mark Clayton

Unlikely - it sounds like an electronics thing. These boxes are very sensitive to low volts - I'd first check the various connectors and fuses are clean and making good contact. Might be also worth checking the battery and charging system - when my alternator failed 'trans fail' was the first indication something was wrong as the battery died.

There are a few heater valves that operate after you switch off - could be one of those.

Reply to
Dave Plowman (News)

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.