The gen 3 RF filter from Land Rover is ridiculously expensive, especially since they clearly know it was a problem when it was still in production. @martyuk has designed and built an inline filter to stop interference going through and sells them from his online shop. @brianp38dse has a £5 fix using a second fob to cut the power to the RF unit.
If you press lock on the fob twice it goes into superlock. If anything goes wrong at this stage you're looking at cutting your way into the car and causing damage. Some people cut the superlock wire in the lock actuator to stop this ever happening. I just never double-lock.
Brake sounds odd. The ABS pump will probably run dor amybe 30 seconds on startup. The pedal shouldn't bump though. That sounds like the ABS kicking in? Any light on the dash or a click from the binnacle indicating the ABS is active? The brake modulator has pistons inside. I guess it is possible one of those is sticking and as the system pressurises it moves giving the thump? Or maybe a sticky slider pin on the caliper? A full brake bleed might help - certainly the cheapest option.
If you press lock on the fob twice it goes into superlock. If anything goes wrong at this stage you're looking at cutting your way into the car and causing damage. Some people cut the superlock wire in the lock actuator to stop this ever happening. I just never double-lock.
Brake sounds odd. The ABS pump will probably run dor amybe 30 seconds on startup. The pedal shouldn't bump though. That sounds like the ABS kicking in? Any light on the dash or a click from the binnacle indicating the ABS is active? The brake modulator has pistons inside. I guess it is possible one of those is sticking and as the system pressurises it moves giving the thump? Or maybe a sticky slider pin on the caliper? A full brake bleed might help - certainly the cheapest option.