I am having the same problem. My rear right light is slightly cracked, damp gets in and the lights stop working.
Volvo has asked me for €1100 for the repair !!!
They say that not only do I need to change both lights but more importantly, I need to install a new kit that will allow the new lights to function.
Apparently new European legislation requires this to be done. I searched the Net, asked the dealer, for an explanation but found none.
I contacted headquarters who offered me a 60% discount but they still cannot provide me with any precise information on the European law they refer to.
I would really like to understand !
Unfortunately, in the meantime I have no choice but to go ahead with the replacement of the lights by Volvo, as it is dangerous not to do so.
Has anyone else encountered this problem, and has an explanation to give me?
Thank you