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[PandaNL]

Hi All,

WhenI bought my E92 335i from the previous owner it had (and still) has the tire pressure light on, he told me the classic line: it just needs a new sensor.

So when I got home I hooked up ISTA and it shows me that there is a problem with the front left and right transmitters. Removing the wheel well revealed no transmitter on the left and the connector all corroded, and on the right the connector completly destroyed because of a minor accident.

So ordered new connectors from BMW and transmitters on ebay, after soldering the wires the left transmitters fault is gone, but the right one is not.

The strange thing is that when the right transmitter is connected for a bit off time, the left one will also come back as a fault. However the rear ones never show up.

I measured ground wires and this is ok on both sides, from the diagram in ISTA pin 1 should be ground, pin 2 + and pin 3 the signal wire.

However when measuring voltage I don't get any reading on pin 1 and 2, but I do get 11v on pin 1 and 3, is this normal behaviour?

Fuse 27 is ok.

Any other things I could test? It sometimes also give RDC module fault, but the rear ones never show up as faulty.

For the people that recommend to just disable the system, I can't I'm the typeof person that will OCD on this and want the system to work. Have invested to much at this point to stop. New original BMW wheel sensors, 3 transmitters and alot of time. I will fix this whatever it takes haha.