TPMS reset not working, pls help, have read every article.
I have tried everything, but for the life of me, I can not reset the "TPMS" system on my car. I frequently have been getting Tire Defect or Riffenpanne messages almost daily since i got new tires on my car almost 6 months ago. The warning appears at the exact same spots on my daily commute, and i check the tire pressure weekly. 42psi front 44psi rear (or vice versa, cant remember) or 44 front 48 rear (again not exactly sure but I digress)
Regardless, if I turn off my car and turn it back on (usually at a stoplight) it goes away, and if I'm luck I can continue without it going off again. However I am extremely tired of seeing the message appear almost daily.
I have tried everything to attempt to reset the system, and read everything this site has to offer about it. I know to turn the key to the second position, and hold the TPMS reset or recalibrate button for at least 10 seconds and a message will appear. I have dont it both with the seat belt buckled and not buckled, car on, car off, poisition 1 and 2, upside down, inside out, and have held it upwards of 5 minutes in pure frustration with no magical message appearing.
Is there a fuse associated with this particuar system or reset system that may have gone bad or am I just a complete idiot?
1) 44 and 48 are too high for tire pressure. 38F and 43R is about as high as anyone would want to go.
2) You need to get the reset message on, then drive around giving the system time to learn what acceptable wheel speed ranges are. Take as many different types of corners as you can.
E55AMG2 is pretty close in his recommendation on tire pressures, or should I say, as I like mine. I actually run 39/42 in town (which isn't often) and 40/43 (or 40/44, if heavily loaded) on the "road" (which is almost always true).
Anyway, to my point for you. BMW driver/instructors at the BMW Advanced M Performance School told us the M5 tire defect system sometimes alerts you with FALSE info. They always come in when they get the warning message, but there is seldom a REAL problem. Switch engine off and back on, and go out again, and play. It seems that L O N G SWEEPING TURNS sometimes produce false triggers. I suppose nothing in life is perfect, but the only time I had a warning message in 6 + years, it was accurate ... and, then thank goodness, I got it, 'cause you typically CAN'T tell by just by looking, that a tire is low. (I always walk around my car before getting in, just in case I have a flat, which I would be able to see. Sometimes, with a tire on very uneven ground, a tire may look low. I check it immediately, before I drive away.)
Key MUST be in position 2, engine off. Press and hold the button for more than 4 seconds, or until the "Set ..." message comes on. Then drive for at least 15 minutes (factory says 10) for the system to complete its set up mission. NOTE: It will NOT report a low tire unless it is about30% below the others, and unless the car is going UNDER 85 or 90 MPH (can't remember which)! I was very close to schredding the inside of a rear tire due to an "injested" nail, years ago. I had been driving well over 120 MPH with NO WARNING message. Tire pressure was 18 lbs when I saw it. No loss, though, as I was on my way home to have new tires mounted (already had them).
Another point: ALWAYS check your tires when cold (after sitting at least 4 hours). On my last trip, I drove through 115 to 117 degree weather almost ALL day. Curious, I checked a tire to see how much it had increased (the pressure increases when the tires are hot). The front tire (which was set that morning at 40.5 lbs), registered 48 at around 1 PM.
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"The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge."
I am not 100% sure, ( and im sure someone on here will confirm/deny ) but i believe the TPM works off the ABS sensors on the M5. They can get covered in crud. Rumor has it a good session with a jetwash get them going again, or otherwise remove , clean and refit.
Just thinking aloud.
One minor point to mention...the reason you should probably have your seat belt buckled is to make sure the "fasten seatbelt" message isn't taking up the message area (where you see the Set... message) as John mentioned above.
I've had one failure message as well, and it was accurate. I had picked up a screw and was down to about 20 psi when I checked it.
One minor point to mention...the reason you should probably have your seat belt buckled is to make sure the "fasten seatbelt" message isn't taking up the message area (where you see the Set... message) as John mentioned above.
I've had one failure message as well, and it was accurate. I had picked up a screw and was down to about 20 psi when I checked it.
Thanks, Mike, I had forgotten to mention the seat belt being buckled ... The "Fasten Seat Belt" message would probably override the "Set Tire Pressure" message.
See, this is the most frustrating part for me, I cant even get the damn thing to say "Set..." or whatever it may be. Im thinking that maybe I have a faulty switch/ button that recalibrates or resets the system?
TPMS reset not working, pls help, have read every article.
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