2002 E53 X5 Starter issues

[oldskewel]

Originally Posted by upallnight

OP stated that he can hear (not here) something spinning when he turn the key so I'm assuming it's the starter and not the fuel pump. If the starter i spinning but the engine is not cranking over then it's the Bendix. Whether it's an inertia bendix or one that is actuated with the solenoid it the bendix that is not allowing the starter to crank over the engine. Sometime a solenoid actuated bendix can also go bad.

I still don't know exactly what he means, so would rather not guess.

I just wanted to provide an accurate schematic / video of how my Bosch starter (and likely how all E53 starters) works, since it's different than the one in the other video.

Really interesting how the non-Bosch one relies on the rotational inertia and threads for actuation. The guy said it came out of a Honda, not sure who made it. Very different from how the Bosch works.