The car is a 2012 BMW 535i, F10 chassis, N55 engine, with a CAS4+ system. It arrives with a deceptively simple complaint: the key’s proximity function doesn’t work. Pressing the brake and the start button does nothing. To switch on the ignition, the key must be held against the induction coil. The customer bought the car this way, and a locksmith has already made a second key—which has the same problem. The remote buttons don’t work, and proximity doesn’t work. Step 1: Test the Existing Keys The first task is to determine the frequency of both keys—the original and the locksmith-made key. Original key. On the Key Tool Plus, no frequency is detected at first. We note that CAS4 keys sometimes give up their frequency immediately when scanned, and tries holding the key to the coil. The transponder reads as ID49—correct—but no frequency information comes through. Switching to KD Max to read frequency without pressing buttons: 315 MHz, which the technician expected for the vehicle. Loc...
Xhorse VVDI Key Tool Plus Pad
Xhorse VVDI key tool plus pad tablet software, hardware, FAQs and tutorials.