BMW: REPLACE REAR LAMPS OR REPLACE REAR LAMP SEALS. THE SEALS ON THE REAR LAMPS EMIT A GAS THAT CAUSES DAMAGE TO THE ELECTRICAL CONNECTORS ON THE LEDS (LIGHT EMITTING DIODES) INSIDE THE REAR LAMP. IN SOME CASES, THE LEDS BECOME INOPERATIVE. MODELS E82, E88. *PE