E39 540 issues please help
Discussion
Just changed the wheels on my 540 m sport to staggered 18" m parallels ( thought would not be a problem) set of for journey to Austria 5 miles into journey ACS, brake and DCS symbol come on in yellow wife says what are them lights I just said don't worry they all do that, got to France all lights no out each time I lifted the throttle to slow down the car did not seem to slow as normal and the DCS symbol was flashing. About 400 miles into my journey auto gearbox started playing up if driving less than 70 mph would kick down to 3rd would not go into 4th until 4500 plus revs, would reset if I stopped and left for a minute plus but would come back after about 10-20 miles still had 400 to do💩💩💩, tried driving with it in stupid mode the engine temp started climbing. Stopped let it all cool down started again temps ok gearbox ok for 30 miles then same prob again ACS brake and DCS lights sometimes coming on and staying on after reset some times only flickering under lift, now 250 miles to go gearbox go mad again get it into fourth by do 4500 revs then lifting ACS etc showing on dash carried on driving the gearbox reset itself after about 30 miles of driving and was perfect for the last part of the journey but all ACS lights stayed on. It was a very hot day with temps up to 39.5 showing on outside gauge well up to 44.5 in traffic but just thought that's the engine affecting it and the motorways were like the M25 on a very bad day. My only problem is I have to drive back and want to resolve issues here if I can
Sorry about the lengthy post but was a 22 hour journey so lengthy as well
Sorry about the lengthy post but was a 22 hour journey so lengthy as well
I will check in the morning but I put 18" not staggered m parallels on my 1997 540 an upgrade from the 16" with no problems.
Thinking about it I doubt the diameters are the same as at every speed now my speedometer reads exactly the same as my tomtom I think it was a little over before is it possible to reset speed sensors?
Thinking about it I doubt the diameters are the same as at every speed now my speedometer reads exactly the same as my tomtom I think it was a little over before is it possible to reset speed sensors?
Took car out for a drive everything ok up till 60 mph then all the lights came on again gearbox ok but only 15 mile drive
Just a few questions why would speed sensors work up till 60 the through all the lights
Why is gearbox ok for 150 plus miles then goes haywire could it be the heat as it was hitting around 40 deg C
The lights came on within 6 miles of leaving home and the gearbox was ok for the first 4-500 miles but that was driving through the night when cooler
Just a few questions why would speed sensors work up till 60 the through all the lights
Why is gearbox ok for 150 plus miles then goes haywire could it be the heat as it was hitting around 40 deg C
The lights came on within 6 miles of leaving home and the gearbox was ok for the first 4-500 miles but that was driving through the night when cooler
Took car out for a drive everything ok up till 60 mph then all the lights came on again gearbox ok but only 15 mile drive
Just a few questions why would speed sensors work up till 60 the through all the lights
Why is gearbox ok for 150 plus miles then goes haywire could it be the heat as it was hitting around 40 deg C
The lights came on within 6 miles of leaving home and the gearbox was ok for the first 4-500 miles but that was driving through the night when cooler
Just a few questions why would speed sensors work up till 60 the through all the lights
Why is gearbox ok for 150 plus miles then goes haywire could it be the heat as it was hitting around 40 deg C
The lights came on within 6 miles of leaving home and the gearbox was ok for the first 4-500 miles but that was driving through the night when cooler
Hi I don't understand so you are saying that if you have an e39 with 15" then stick 18" or 19" it won't work my front and rear rolling radius are different due to width and tyre profile will double check but sure they are different took these off my 1997 540 never had any gearbox issues with it
Thanks everyone for there help, just got back to England this morning (4 hour wait at tunnel due to migrants)
Changed both front wheel sensors took for a drive all lights came on, drove round parts of Austria every day no gearbox issues but dashboard kept lighting up, left for home yesterday morning no lights on dashboard, got caught in long traffic jam after jam gearbox started playing up (no dash lights) after 10 miles gearbox reset itself no further problems. dashboard only lit up when I accelerated very hard, in summary I think the gearbox is over heating and wheels are causing the light issues (but why only under hard acceleration (no lights at 120 mph in Germany) any help on the overheating would be appreciated.
Changed both front wheel sensors took for a drive all lights came on, drove round parts of Austria every day no gearbox issues but dashboard kept lighting up, left for home yesterday morning no lights on dashboard, got caught in long traffic jam after jam gearbox started playing up (no dash lights) after 10 miles gearbox reset itself no further problems. dashboard only lit up when I accelerated very hard, in summary I think the gearbox is over heating and wheels are causing the light issues (but why only under hard acceleration (no lights at 120 mph in Germany) any help on the overheating would be appreciated.
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