TPMS.... Question.. Any Idea ?????
 

I have a 05 X5 w/ TPMS ....... does anyone know if the 05 had the built in Sensors in the wheel or did it use the ABS system (relative tire rotation speed) to drive the TPMS, so there are no separate sensors on each wheel...??????????????:dunno:

i dont have a 05 X5, but i think its had the built in sensors in the wheel like my 04 E60.

I have 06 and it is ABS based system that monitors wheel spinning
I dont think that TPMS was ever option on E53

Quote from manual:

Flat Tire Monitor

The concept
in certain speed ratios.

Functional requirement
the correct tire inflation pressure.

All X5's use ABS system

Still confused....... Any techi Out There......
 

I think this might not be the case.... someone told me that the X5 for US uses the sensors in the wheel instead of ABS system ???????????/

I can verify that a US Model 06 4.4i uses the ABS system, not TPMS. I just replaced the wheels last week and did not have the tires removed from the original to look for sensors. On the first drive with the new wheels the tire indicator came on a few miles down the road (common occurance with new wheels/tires due to slightly different diameters from stock) and was reset according to the owner's manual. If the system used actual tire pressure sensors it would not allow me to reset the warning indicator...

sensors..............
 

OK....just got off the phone with a service advisor from Difeo BMW.... he states that all X5 that has the TPMS indicator on the center console uses the Built in sensors in the Rim..........

In that case i would seriously consider changing SA :popcorn:

It counts the # of revolutions the wheels make and compares them. The one turning the fastest has the least air (smallest diameter) and could be going flat causing it to alert. All BMWs equipped with Ibus work this way.
Your SA is an idiot (mostly the case with every SA though, although there are some good ones) and you should seriously reconsider anything he tells you in the future.

CCC (E60 5, E90/2 3, E63/5/6 6&7) cars might use air pressure sensors, but Ibus (E53 X5, E39 5, E38 7) and K-Bus (E46 3) cars use the ABS sensors to give a flat tire warning.

does this mean that it uses ABS system or the sensor in the rim ???

there

is

no

sensor

in

the

wheel

It uses the sensor attached to the ABS brake system (the one that monitors for lockup).

Ok...Ok....

so if the E53 works with the ABS to count the revolution to monitor the tire pressure... then which Bmw does this part work on.. ??

E60, E61, E63, E65, E66, E70, E90, E91, E92, E93, the cars with Most/CCC ie the bangle BMWs

Thanksssssssssssssssss.... very helpful, U just save me $375.... that's what the BMW dealer wanted to charge me to put this sensor in on new wheels....

forget that system anyways....it's pretty much useless. Just check your tire pressures when you fill up and you should do just fine.

Looks like a lot of the SAs do not know about this little ABS vs. TPMS nuance. I just spoke to a pretty good SA at Prestige BMW (he's been there for many years), and he also stated that the rim has the sensor. I told him that's not the case with the E53, that it counts revolutions per minute on the chassis.

And he said: "You know what...you're absolutely right....because you have the 06 right? OK, yeah, you're right"

I guess he knew it at one point, but he deals with so many BMW platforms, that he got the newer models "blurred" with the older ones.

That's what's so great about this Forum! You can get to know the details that even the experienced SAs have trouble with.