Indesit IWD71451 any test / diagnostic to check heating element is working?

Symptoms: washing comes out cold, and on every cycle a mysterious extra 30 minutes suddenly gets added about half way through the cycle. No error code.

Just wondered (a) is this the heating element? (b) any way to test it from the front panel?

I know I can just put a multimeter across it, but that involves removing a door, lifting down the tumble dryer… Etc. If there’s a way to test it by pressing a few buttons I’d much prefer that!