Driving around last night, I heard/felt a big bang from the rear.
The car carried on no problem, but I still pulled in up the road where it was safe to do so to check it over.
It seemed fine, until I steered to the right on almost full lock, at which it made a "clunking" sound. Rather than make it worse I called the RAC who had checked it out...
"Suspected internal fault with differential (output shafts seem to have excess movement)"
He pointed out that rather than just spinning around, they were moving from side to side slightly. He said it could eventually cause the rear wheels to lock. He also said the fact my car is so low, could help prevent it from flipping over!
Got it onto the flatbed, and taken home It is still driveable, but didn't want to risk it.
Tomorrow, I'm going to call the garage (Toyoda Tech) and ask them to take a look when they can fit it in.
Has anyone had similar problems? Could it be anything else? What could have caused it? Most importantly - what is the estimate cost for replacement/repair + labour?
Thanks