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  #1  
Old 01-19-2017, 06:27 PM
flolo flolo is offline
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Mein Auto: 2003 x5 4.4i
Trans fail safe mode

2003 X5 4.4i

Hi guys just had an issue with my baddass X5. Starts up runs great, all gears from 1st to 5th. When it warms up it goes to trans fail safe mode and runs badly. It gets stuck in 4th or 5th gear, Sport or M mode do not work after that. Any ideas, because I have not done anything to it for it to change. I did drive for an hour in the city and car never changed to 4th for a while since it was a constant stop an go, and was turning it on and off before this happened. Any suggestions would be greatly appreciated. thanks !

Last edited by flolo; 01-19-2017 at 08:24 PM.
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  #2  
Old 01-19-2017, 08:42 PM
gunyvw gunyvw is offline
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you may have lost the high gears
the continued driving can do it in

you can change the filer fluids and the solenoid(s)
that control the 4th and 5th gears
dont know right off if that's one unit or more
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Old 01-19-2017, 09:05 PM
flolo flolo is offline
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Hi. It stays stuck in 4th and 5th gear. Drives terribly. Very slow as you take off. Then I let it sit for 30 min. It cools down and runs perfect again.

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  #4  
Old 01-19-2017, 09:43 PM
gunyvw gunyvw is offline
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then you may be able to save it
but dont push your luck
as in stop driving it
do as maximum servicing to it as you can
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Old 01-19-2017, 09:45 PM
flolo flolo is offline
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Will do. Thanks for the advise. First things first.

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Old 01-19-2017, 10:09 PM
gunyvw gunyvw is offline
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Mein Auto: x5
yep
i stress heavy service
as much or as many of these steps as you possibly can...

drop the valve body and clean it in hand
solenoids
fluids
filter
clean/inspection of cooler unit
flushing lines
if you cant get the torque converter to empty
...change the fluid in the system a second time

you have a high powered machine
that transmission handles lots of torque
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Old 01-28-2017, 01:55 PM
325ci.com 325ci.com is offline
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Mein Auto: 2001 BMW 325Ci
It is most likely your

Abs module that has gone bad. One thing I learned from owning this car is that anything electric related needs to be diagnosed with a code reader / computer. It narrows down what's causing the error and you can chase it instead of replacing parts that may not need replacing.

So in my case I had the same symptoms, car starts off in 4th gear or so but runs perfectly fine. It was the abs module. Had it sent out to be rebuilt. Replaced it and voila trans failsafe mode off! (Had to recalibrate steering wheel sensor though).

Car will run without the abs module (albeit without dsc or abs of course), so you won't be down while the repair is happening.

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Old 01-28-2017, 02:02 PM
flolo flolo is offline
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Hi 325ci.com. I sent out the tranny to get fixed already. It was a bad drum and it was noticeable. Read all sorts of codes. Truth is. Car ran fine until it warmed up. Then it started to fail. Abs would not affect it. We figured if it was abs related it would fail as you drove after clearing all codes. But the car failed as soon as you took off when it was hot. When it sat cold for an hour or so it would run just fine. Solution is a rebuild kit because of wear and tear caused also by a bad pressure spike. Thanks for the advise. Hope this experience helps others. I'm supposed to get car back today and fixed. Hoping to get test drive an repost aftermath.

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Last edited by flolo; 01-28-2017 at 02:03 PM.
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