Two problems related to exterior lighting have been reported for the 2015 BMW 535. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 BMW 535 based on all problems reported for the 2015 535.
Headlight started to collect condensation, not due to any damage to the headlight itself. I understand that this will eventually lead to damage of the electronic components of the headlight because the condensation collects in the bottom of the headlight. Per the advice of my mechanic, I am replacing the headlight before the water can do damage. He says it's a well-known problem.
Myself along with thousands of other owners are having moisture build up issues inside the headlight that eventually create puddles of water that short out the headlights which is $5000 for each headlight replacement.