Failure of the rear axle or driveshaft may cause the loss of motive power, failure of the parking brake, and the inability to shift the transmission into "PARK," increasing the risk of a crash.

An inadequate amount of rear axle lubricant may cause rear wheel bearing damage and bearing seizure, and rear axle or driveshaft failure.

What to do: Book it in at your next service. There is no deadline and no charge.