Headlights not working after inverter replaced

Hi all,

After the car shut down and had to be towed to the dealer,the inverter was replaced (fortunately we were just under the 80k mile hybrid warranty). The problem now is that the headlights and parking lights are not working. We took the car back to the dealer who said it was no doubt burnt out headlight bulbs. I told them that the parking lights were also not working and they insisted it is the headlight bulbs.

I went home and replaced the bulbs, no luck. I replaced the 20amp headlight fuse, no luck. Anyway, we are planning on taking the car back to the dealer but thought we'd ask here if anyone knows what might be going on, and importantly if this is something we will be expected to pay for to fix.

Thanks in advance for your input.

Drew

 

Update. Took the car back and the dealer is still saying the headlight, driving light, reverse light bulbs are burnt out (despite my having put in new headlight bulbs last night.) And repair cost is on us. So they replaced the inverter and all the bulbs just happen to die at that time. I doubt it. Anyone, have any idea whats going on here. Is this just a dealership trying to gouge us, (bulb replacement is being quoted at ~$300) or do can these bulbs really all go out all at once?