OK, I think we've successfully ironed out this little gremlin... at last
There are one or two modified PIC chips in use at the moment and have been for varying lengths of time and I'm now satisfied that these modified chips have solved the problem.
Replacing a PIC is a reasonably simple task which just requires a degree of dexterity and a modicum of patience.
Basically, this problem only ever arose when the UR was used with the OEM key fob and is down to the fact that it sends to different sets of signals at the same time which on occasion could confuse the BCU (Body Control Unit)
The modified PIC has a timer incorporated which means that, effectively, 500 - 1000 milliseconds after the operation of the key-fob and initial locking of the car, the UR section kicks in and takes care of the windows, sunroof, powerfolds etc. That 500 - 1000 millisecond delay is sufficient for the BCU
to differentiate between the signals and to act appropriately each time.
The modified PIC has been released to service as it were and details of how to claim a free modified PIC will be made available on the ThinkTank web-site in due course.
1. You will only need this updated PIC if you use OEM control. If you use a third party remote then it is not required as the circumstances whereby the BCU
might become confused will not occur.
2. This PIC will only work with the later UR modules where the PCB (Printed Circuit Board)
was modified to include ignition controlled inhibition of the module to overcome the problems caused if speed locking is enabled.
The way to confirm whether you have the later module is to look at it and see if there is a THREE WAY connector on the PCB
. If there is then you have the latest module. If not then you will have to replace the module.
It is unlikely that those using the OEM key-fob will have the older module as the module design was changed at much the same time as I worked out how to get the UR to work with the OEM key-fob