I have been struggling to get into service mode for EPB but eventually made up my own set of instructions which works perfectly. It might help others with similar issues. Details below.
Mazda cx5 EPB Release method (TLM)
1. Start engine. Foot on brake, release EPB. Stop engine
2. Turn ignition on.
3. Hold throttle to floor and press and hold EPB down (EPB light flashes)
4. Press stop/start 3 times.
5. You will hear motor noise. Release EPB and throttle.
RESET METHOD.
1. Turn ignition on.
2. Press accelerator and hold EPB up
3. press stop/start three times.
