"Brake Proportioning" warning on dash...
#1
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"Brake Proportioning" warning on dash...
and no speedo. Is this a wheel sensor? Or something else? My mechanic's scan tool is in need of an update from Snap On, could not scan for drive train faults last night. Another mechanic friend of mine said it could be a "vehicle speed sensor" associated with the transmission output. Am I SOL w/out a scan tool?
#2
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Yes.
Your P!g can not determine individual wheel speeds, so independent ABS (software controlled proportioning/balancing) is no longer possible.
Your P!g can not determine individual wheel speeds, so independent ABS (software controlled proportioning/balancing) is no longer possible.
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On modern BMWs all sorts of interesting and exciting things happen (dashes go crazy, faults galore, windows going up/down by themselves..)
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#9
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Yup. From what I can read on the estimate - it looks like communications problems.. which can be caused by a low voltage condition.
Just a FWIW - although the Cayenne is good about faults (hasn't tossed any - yet..) my BMWs love to throw spurious codes if they feel neglected. Before even thinking about "fixing" anything I reset all the codes (after noting them) and see if they reoccur. They very rarely do. The BMW scan tool I use (AutoEnginuity) also tells you how often the codes occured and if the faults are presently being detected. That info is also very useful for troubleshooting.
A failing coil will show repeated stored codes for misfiring, while one that was just not firing for a low voltage reason usually only shows one or two incidents. One is really indicating a problem - the other is a wild goose chase up a blind alley.
I'll just add - this is when a really good mechanic is worth their weight in gold vs one who just blindly swaps modules/parts based on what his scanner is telling him.
Another FWIW - if all he has to use is the SnapOn scanner - it isn't terribly good according to my mechanic. It misses some things and misidentifies others. A dedicated Porsche scan tool (Durametric comes to mind) is likely to be much more accurate.
Just a FWIW - although the Cayenne is good about faults (hasn't tossed any - yet..) my BMWs love to throw spurious codes if they feel neglected. Before even thinking about "fixing" anything I reset all the codes (after noting them) and see if they reoccur. They very rarely do. The BMW scan tool I use (AutoEnginuity) also tells you how often the codes occured and if the faults are presently being detected. That info is also very useful for troubleshooting.
A failing coil will show repeated stored codes for misfiring, while one that was just not firing for a low voltage reason usually only shows one or two incidents. One is really indicating a problem - the other is a wild goose chase up a blind alley.
I'll just add - this is when a really good mechanic is worth their weight in gold vs one who just blindly swaps modules/parts based on what his scanner is telling him.
Another FWIW - if all he has to use is the SnapOn scanner - it isn't terribly good according to my mechanic. It misses some things and misidentifies others. A dedicated Porsche scan tool (Durametric comes to mind) is likely to be much more accurate.