alarm lite came on and warned to park immediately. Something about an overvoltage. any suggestions???

I looked on the internet and the bixenon lites are not available for the 05 s40. I ended up using the PIAA extreme white plus, which are the same wattage as original volvo lites but put out double the luminas (twice as bright). That wouldn't change the warranty since they are the same wattage.

So what I got is that the bulbs for low beam are a philips H11, 50 watt. That is if you don't have the zenon lites. There are very few options available for a better bulb, the PIAA H11 is the only one I could find. IT is expensive, like $100 cdn, but has double the brightness with the same wattage....

Yeah we have a similar problem with our 05 s40. the brights are great but the low beams are dim. I'm working on the problem and it may be with the daytime lite sensor, so that it's like you're only getting the daytime running lites coming on at night. I'm new to this site so bear with me if I'm not...