I have had a bit of problem with my R53. It sits in the garage in winter and only gets driven in the summer. This summer the engine won’t turn over. After a bit of money spent, the local mechanic changed the alternator and finally I could drive it again. However, the ABS, traction control and tire pressure came on after the alternator issue. My mechanic’s OBD reader said left rear wheel sensor. I had the ABS sensor and the left rear wheel bearing replaced and those lights are still on. My mechanic is scratching his head as his reader is still saying it’s the left rear. Does anyone here know what could possibly be wrong? I do have to say that after the sensor was replaced, the tire pressure light comes on 30 seconds after I started driving. Any idea?