One problem related to warning light on has been reported for the 2013 BMW X5. The most recently reported issues are listed below.
Warning light on dash that reads "fault in passenger restraint system affecting airbag, tensioner or belt-force limiter. " BMW dealer (roadshow BMW / memphis) did replace belt tensioner at a cost to me but the error code remains. The passenger seat mat could cause this problem. Has there been a recall on the passenger seat mat? I feel that this is a safety issue dealing with airbags and seatbelts. The BMW dealer in jackson, ms did replace the driver and passenger airbag under a recall but I am still concerned about the safety due to the "system malfunction. . . Fault in passenger-restraint system affecting airbag" warning light on dashboard. This warning message and seatbelt warning light remains when car is in motion. I bought the car on March 17, 2015 (33,000 miles) from my sister who bought the car new from the BMW dealer in nashville, TN. The error message was on the dash at that time. The car now has approx 64,000 miles.