E39 M5 TYRE DEFECT CONTROL MESSAGE

[bmwforlife]

Right so I took my E39 to Supaquik kuilsriver .Super guys good service . Changed the back tires . So back it comes and now when I go above 40km the tyre defect alarm comes on the check control .

So i checked it out reset it , checked the wheels all is well .Took it back had the wheels put back on again no difference .

I seem to remember the run flat senor on these cars are on the hub if I'm not mistaken wonder if the paw paws at supa quik havent damaged the darn sensor

what do u guys think ?

 

[calypso]

From what i understand its just using the ABS sensors in reverse. Its looking for one wheels to be going faster then the others. Its not a perfect system though, good for fast decompression, not so great for slow. Are there any strange differences in size, front to back or left to right?

 

[Philip Foglar]

Speak to Sith - had similar issues with his M5! I think it was more to do with the type pressures...

 

[bmwforlife]

On the front I have 245/40/18
On the back 275/35/18

 

[Philip Foglar]

Could also be tyre fitment is slightly wrong, as in just fitted and not moved around the rim to ideal position - could be that there is a high spot somehow...

 

[jeff_denning]

Have you tried resetting the tyre pressure monitoring system?

 

[pi328]

Copied from the manual:

M Dynamic Driving Control Tire Pressure Warning (RDW)

The concept

RDW monitors the tire pressure at all four wheels – even while you are driving. The system provides an alert whenever the inflation pressure drops significantly below the specified pressure in one or more tires. In order for the system to "learn" the correct tire inflation pressure, check the inflation pressure in all tires according to the inflation pressure table beginning on page 26 and make corrections as necessary. Then activate the system. The Check Control (refer to page 73) will inform you if the tire pressure is not correct.

Activate the system

1. Turn the ignition key to position 2 (do not start the engine).
2. Press and hold the button (arrow) until the message "SET TIRE PRESSURE" is displayed for a few seconds in the Check Control.
3. After you have driven a few minutes, RDW transfers the current tire inflation pressures as the nominal values to be monitored.

You will only have to repeat this procedure following a correction of the tire inflation pressure. Otherwise, the system is automatically activated in ignition key position 2 and therefore whenever the vehicle is driven.