Did you disable cold scan in PA soft? I'm unsure if this will have any effect, other than eliminating the warning on your dash. I installed after-market LED tail lights some months ago. They were apparently "eror-free" items, with in-line resistors incorporated. Brake lights work fine, however my tail lights flicker continually at high (strobe) frequencies. Contacted the eBay seller, who claims this 'cannot happen' and no longer replies to questions... I've learned to live with it to be honest, however if you discover a fix, I would be interested to hear though.

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08/06 build 4.4i Stirling Grey over black