535D M Sport seriously losing power
Discussion
Not sure if anyone can help here?
Car is a 535D, June 2007 LCI, with SAT and 18600 miles on the clock.
On Thursday I was driving through a local village ans as I slowed down for a junction and I pressed the accelerator nothing happened. I was already rolling and the car didn't rev or accelerate and eventually I pressed the kickdown happened and away after a second or two it went. I thought at the time it was simply a gearbox glitch.
I have driven over 350 miles since that incident and coming home tonight the same thing happened again only for a couple of miles. I'd overtaken a car and slowed down, went to hit the throttle and found it would not really accelerate at all. The car would not go over 60 (ish) in any gear and in D from a standing start will only go fast enough to change to second and then stay at about 4000 RPM, not changing gear and not accelerating. Whilst travelling at 50mph, if you put your foot hard down it just doesn't do anything, other than change gears.
It seemed to fix itself when I had to stop at a junction but then happened again a short time afterwards. It's just been serviced and had new BMW software to cure iPod and other problems. There are no warning lights or messages in iDrive suggesting the car thinks it's OK, but obviously has a problem.
I'll call the garage tomorrow but wondered if anybody else has had similar symptoms either in a petrol or diesel E60?
Car is a 535D, June 2007 LCI, with SAT and 18600 miles on the clock.
On Thursday I was driving through a local village ans as I slowed down for a junction and I pressed the accelerator nothing happened. I was already rolling and the car didn't rev or accelerate and eventually I pressed the kickdown happened and away after a second or two it went. I thought at the time it was simply a gearbox glitch.
I have driven over 350 miles since that incident and coming home tonight the same thing happened again only for a couple of miles. I'd overtaken a car and slowed down, went to hit the throttle and found it would not really accelerate at all. The car would not go over 60 (ish) in any gear and in D from a standing start will only go fast enough to change to second and then stay at about 4000 RPM, not changing gear and not accelerating. Whilst travelling at 50mph, if you put your foot hard down it just doesn't do anything, other than change gears.
It seemed to fix itself when I had to stop at a junction but then happened again a short time afterwards. It's just been serviced and had new BMW software to cure iPod and other problems. There are no warning lights or messages in iDrive suggesting the car thinks it's OK, but obviously has a problem.
I'll call the garage tomorrow but wondered if anybody else has had similar symptoms either in a petrol or diesel E60?
Update - drove the car this morning and all appears OK for the moment.
I've have also spoken to the dealer who recently serviced the car and they suggest it's probably a sensor but they will be unable to identify which one and the ECU will not record what happened. If I take it along they can have a look but won't be able to identify the fault, regardless of the fact the car went into 'limp home' mode.
They have suggested I drive the car and should the fault appear again, then drive to the nearest BMW garage, leave the car running and they can plug in their laptop and have a look.
I also hope that the fault doesn't happen whilst overtaking!
I've have also spoken to the dealer who recently serviced the car and they suggest it's probably a sensor but they will be unable to identify which one and the ECU will not record what happened. If I take it along they can have a look but won't be able to identify the fault, regardless of the fact the car went into 'limp home' mode.
They have suggested I drive the car and should the fault appear again, then drive to the nearest BMW garage, leave the car running and they can plug in their laptop and have a look.
I also hope that the fault doesn't happen whilst overtaking!
The car has been in the dealer today and they have diagnosed a faulty ecu (although they called it a DME?) and have ordered one form Germany which will take a week.
They have lent me a 3 series vert and from Monday a Z4M for the rest of the week, so not all bad news
Hopefully they aren't simply guesing here......
They have lent me a 3 series vert and from Monday a Z4M for the rest of the week, so not all bad news
Hopefully they aren't simply guesing here......
Just to keep you all in the loop.
Got my car back yesterday and all fixed (hopefully) and the the problems were as follows:
8 days diagnosing and replacing/programming the ECU which I suspect was not faulty...
1 day diagnosing a faulty pressure sensor (?) which was showing as duff in the ECU read out.
1500 miles covered in their cars rather than mine whilst the work was being carried out
Got my car back yesterday and all fixed (hopefully) and the the problems were as follows:
8 days diagnosing and replacing/programming the ECU which I suspect was not faulty...
1 day diagnosing a faulty pressure sensor (?) which was showing as duff in the ECU read out.
1500 miles covered in their cars rather than mine whilst the work was being carried out
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