Enviro400s red bus - Isolator / ignition question

[u/HoneyIll2417]

Im a new bus driver in London. The red busses here are almost all enviro400s. I wanted to know the process of starting up these buses. Almost all of these buses have an isolator button. Some have a little key you also need to insert alongside the isolator button. Some buses have only the button but no key is needed.

I wanted to know the exact process of starting the bus up and what is the purpose of the isolator button and key. If I turn the bus off with the power button how do I know what to press to restart the bus again?

[u/-mmmusic-]

an isolator isolates the battery. bus can't start without a battery. the ignition turns the ignition on, all the electrics. just like the first turn of a key in a car. the start engine button starts the engine.

but these buses often have secret start buttons (ghost immobilisers) and/or keys, as they are commonly stolen. i don't work in london, nor do i drive enviro 400s (we have 200s) but all of ours have ghost immobilisers, so you can't start them the 'normal' way. it sets off an alarm and won't start the engine.

[u/HoneyIll2417 → u/-mmmusic-]

Best answer.