So, I purchased a 2000 A8L last month and it had a warning light indicating that a brake light was out. Sure enough, one of the bulbs was out so I replaced all bulbs with LED bulbs. The brake lights work, but the warning light is still on. However, now it now longer displays the symbol, it also alternates with a display that says "brake light". I checked all other bulbs (turn signal and reverse) and everything works, how do I get the warning light to stop? Is there an issue with LED bulbs?