I'd chase the voltage...any power at the relay? Possible replacement relay is bad. Location of the relay please, I have a 2011 with only the center section up working (3 rd brake light ) is the relay under the hood? I looked at the small circuit board in the left rear corner ( the baggage area, tru...

2011 XC90 I have third brake light (upper center ) working but not either side. Is the relay on the left corner interior? Does anyone know if there is a brake light relay under the hood? Advise please!