Quote:
Originally Posted by maf330xi
Did you do anything to your headlight prior to washing? I'm more interested in the reason the water got in (was it the lid seal for replacing bulbs, was it a cracked lense etc.) Or did the dealer just blindly replace the entire headlight assembly.
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The module that fails and causes the error is located under the headlight assembly so it has nothing to do with replacing the headlight. Water or condensation inside the headlight causes a short which in turn ruins the module. I'm not sure if the seal was the cause of mine failing but it could have been because I did open them up at one time to install new Mtec AE's. Condensation can form regardless if the headlight has ever been opened though, just a shitty design.