TPMS Diagnostic Sharing

[afropelican]

Hi All,

Just thought I'd share some interesting issue with my TPMS and how I resolved it. I didn't find anything on the X5 Forums regarding this solution, but it came up in 3 & 4 series forums (not on bimmerpost) so thought I'd share.

Symptom:
Intermittent TPMS failure light on dashboard / I-Drive and when this happen no Pressures / Temperatures would be displayed.
No systematic timing to this happening. Sometimes it would stay on for 3 days, sometimes only 10 mins.
Light first appeared after car was left to sit for a month.

Initial Steps Taken:
Charge Battery
Clear Codes
Pump Tires
Reset TPMS
Outcome - Fault Persisted.

Secondary Steps
Plugged in scan tool, showed fault FL TPMS Sensor.
Replaced FL TPMS sensor (No Coding Required to replace TPMS sensor - they are self-learning if genuine BMW sensor is used).
Garage told me the batteries were good in all my sensors with their TPMS scanner.

Outcome - Fault Resolved for 3-4 weeks before reappearing.

[afropelican]

After 4 weeks.
Symptoms returned and additional ones appeared:
Intermittent TPMS failure light on dashboard / I-Drive.
Intermittent "Remote Control not Found" when driving.
Sometimes tailgate would not lock / open using comfort access

Fault Code:
FL TMPS sensor Fault reappeared in scan tool. (4806B8, 48069E)

Steps Taken:
Replaced Key Batteries
Replaced Remote Receiver / FBD 3 standalone, located behind trim underneath rear quarter vent next to rear fuse board.

Outcome:
Fault Resolved (for 1 week so far).
Key range appears to have increased.