18th Feb 2012, 16:36

Just had a very similar problem fixed. The mechanic ran diagnostics and found a leak in the heater valve, which was slowly leaking antifreeze, which was very difficult to find without the Jag computer. Our heater was also not working. He fixed the valve,and voila, no coolant smell and leak, and the heater works. You may want to check that out. Apparently it is a common problem in Jags.