[stein_325i]

Originally Posted by saijin

Aren't these things water proof? If so this should be on the manufacturer 100%

Apparently not if it needs replacing. My point is, the technology is very expensive, and that something like just a headlight (not including labor) outside of the 4/50 warranty, can cost as much as a used Corolla so keeping long-term, it can be expected that maintenance/upkeep is likely more expensive than your E90.