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EWR Key lockout


BMWRAT

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I have had my new R 1200RT about 2 months now and all of a sudden I get the ERW warning when turning on the key. This locks out the starter. I have used both normal keys as well as the plastic emergency key, same problem. If I try several times I have been able to get it started. Before taking it in for service I wonder if anyone else has had this problem and if it might be battery related.

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First question to eliminate possible cause: is there another car key that might have a chip in it anywhere near your bike key? This can confuse the situation and cause a lock-out.

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My 2005 R1200ST was doing the EWS thing and a few other oddities. Turned out to be low battery. Low current/volts(?) seems to play havoc with the computer; all kinds of gremlins appear. There are some issues with some of the batteries and I think there was an issue with some models drawing juice while off and lowering the battery.

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