In my beemer. It's occasionally coming up with "Emergency call system unavailable" After some research it appears to be the battery in the telematics unit. Apparently the rechargeable battery has a life span of about 5 years. The unit lives up in the rear roof lining, so a load of trim needs to be removed, and the rear headlining needs to come down. About 250 quid part and labour. Wouldn't mind, but when it complains the message blanks out the mileage and mpg display, and won't be reset till a power off.
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