your carrier could be freezon up ,mine started back in oct on passenger side I would lift handle up but it wouldn`t go back down flusg where its suppose to be ,so when the weather got back to the + side and thawed out, I lifted the door handle up and sprayed some teflon on the carrier and its been find since and its gotton down to -40c with no probs.

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2003 bmw x5 3.0i ,219000km build date 2003-08-18