C70 Coupe L5-2.3L Turbo VIN 53 B5234T3 (2001)
Check the drive shaft for damage on the contact faces against the wheel bearing.
Check the booms (splines).
Clean and check the toothed wheel with regards to the shape of the teeth.
Lubricate the booms (splines) and the contact faces against the wheel bearing with a little oil.