2006 E90 exhibits a failure to crank.

[BizarreBleak]

I have substituted the engine loom and verified all fuses and relays, all of which are functioning properly. The engine fails to ignite. The starter activates as though attempting to rotate the engine but fails to persist. The engine can be manually rotated via the pulley, indicating it is not seized.


I connected to Ista, which displays many problems; upon clearing, some reappear while others do not. However, I am confident it should still start regardless. I am currently perplexed. I have also replaced the DDE relay.

Requesting assistance, if possible.

[KnightNewscast]

It may be a defective ground strap or a malfunctioning starter motor.

[BizarreBleak]

I have verified them, and they are both satisfactory. The starter rotates unimpeded when linked to an energised wire. It also participates in the flywheel.

[Tearcarl]

Is the battery still robust after being allegedly unused for an extended period?

[BizarreBleak]

The battery is completely charged. The vehicle was in continuous operation until the loom malfunctioned.

[Mantelle]

It appears to resemble a depleted battery.

[BizarreBleak]

The battery was completely charged as we awaited the arrival of the new loom.