I have a MY2001 S80, and replaced one headlamp and two rear lamps in the first 3000 miles. I was told by the Dealer that the factory "fix" did not apply to my serial number. However, he also advised that, if I complained in writing about bulb life, they were authorized to turn off the DRL feature under Warrantee. I wrote a sentence on my service order, and the DRLs were de-activated at no charge. The "off" position on my light switch now actually does something, and the lamps don't flash on and off during cranking.