Was driving around town when the ABS, ASC+T, brake warning light and automatic transmission warning light all came on at once. In my mild panic I found a place to park, immediately switched off the engine and consulted the handbook. Quoting the handbook ' if the brake warning light comes together with the ABS and ASC+T warning lights, the complete ABS,CBC and ASC+T regulating system has failed. Drive carefully and study the traffic situation well ahead'.
For the automatic tranny 'if the telltale light comes, a fault has caused the automatic transmission to switch into emergency run program'. In another desciption 'if telltale light comes on, this indicates a transmission system malfunction. All levers positions can still be selected but in the forward positions only certain gears are actually available when the car is drive'.
Has anyone experienced this problem where the tranny warning light and car stability lights came on together? What will cause the complete regulating system of the car's stability functions to fail? Is it still safe to drive the car for a few more hours (recently had a flat tyre and currently using a 5 year old spare which I really need to replace and get the car aligned). There is a whirring sould coming from the engine compartment in the last few months which the mechanic says could be coming from the pump?? and also whenever I move the lever from R to D, it sticks in N first and I have to to depress/repress the lever to get to D.
Quite a lengthy description I know but this is the first time it happened in 5 years. Any advice is greatly welcomed!!
I know it's been a long time did you ever got it fixed and please
list what was the problems and how it was fixes
thanks
your battery is almost dead. i got same problem last few months. after i changed the battery, everything work fine now.
I would definitely suspect electrical weirdness. Verify battery output voltage.
eeeks!
---"Angelina" '96 328isA S/C (The *sirius* ubercommuter) ERT/Vortech V2SQ with other goodies
"Man, your car is scary fast...." *Prestige BMW, Jan.18, 2003* (sold )
---"theStealth" '03 TiAg 325iT
---ZURV1 (Zombie Urban Response Vehicle) 2010 Chevy Surburban
---bmwcca member # 179740
the asc/dsc control module going out will also cause those exact symptoms.
the trans light came on BC the ASC module quit telling it how fast the car was going, and the ABS module also uses the calculated vehicle speed to tell if the wheels are slowing down correctly (not locked up)
Erik
.:BFC Official Wiring Hell Club President:.
My DSC light and Brake lite up yellow. I have been reading through some of remarks here, but Im confused Can this be fixed, and cost? Can I still drive my car short distance? Any help will help me. I live in Lake Worth FL, and having a hard time finding anyone who knows about BMW Z4. Do not want to go to Bramens BMW $$$$
Last edited by yvonne12; 09-25-2018 at 08:07 AM.
It could be a lot of issue, but the most common problem is the ABS wheel speed sensor. You will need to read fault codes from the DSC module or you will be throwing parts at the car. Replacing the ABS sensor is very easy, this guide shows you how to do it yourself.
Also it shows you how to read the codes from the DSC module, which should be the first thing you do.
Thank you for the respond. Hope I can find someone here that can fix for me.
Last edited by yvonne12; 09-25-2018 at 12:01 PM.
Google "BMW E46 Trifecta problem" you'll find a goldmine of diagnostics information out there for this problem.
Good luck !
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