Sorry this is VW, rather than M-B ... but would welcome any advice / comments 
2.5 years ago my Sharan had the (heated) windscreen replaced under warranty after it developed a large stress crack in one corner. The car's warranty expired last August, and the windscreen is now leaking.
The main dealership that has serviced the car from new (and did the windscreen replacement) is suggesting that I should get the screen replaced by my insurance company, and as a "goodwill gesture" they will pay the excess. They've had my vehicle for a total of 11 days so far (3 visits); originally the water ingress was blamed on blocked bulkhead drains, then faulty door seals, now the windscreen.
I have no paperwork for the original windscreen replacement as it was done under warranty, so I cannot "prove" it ever happened (if it ever came to that).
My insurers are Direct Line, the policy states that they will replace "broken glass". Obviously the screen isn't broken, but being bonded in it would be if it was removed!
I could contact Autoglass (their nominated glass replacement company) ... I don't know whether they'd replace a screen that clearly isn't damaged without telling Direct Line. Or whether they'd suggest I whack it with a brick and call them back (probably the most pragmatic option).
Whatever happens I will lose the car for another day or two - I seem to remember that bonded screens have to be left 24 hours before driving? I suspect a heated screen may not be a stock item either. Can they do the windscreen replacement in the open (i.e. at home on my drive), or does it have to be at a dealership? I believe that a bonded screen is "structural" so it's a bit of a worry that in less than 4 years it's stress cracked once and now come unbonded. Perhaps 204 bhp is too much for that bodyshell (flexing)?
The car is currently at the VW dealer in Guildford (and I'm at work in London) ... what do you think I should do?!
TIA

2.5 years ago my Sharan had the (heated) windscreen replaced under warranty after it developed a large stress crack in one corner. The car's warranty expired last August, and the windscreen is now leaking.
The main dealership that has serviced the car from new (and did the windscreen replacement) is suggesting that I should get the screen replaced by my insurance company, and as a "goodwill gesture" they will pay the excess. They've had my vehicle for a total of 11 days so far (3 visits); originally the water ingress was blamed on blocked bulkhead drains, then faulty door seals, now the windscreen.
I have no paperwork for the original windscreen replacement as it was done under warranty, so I cannot "prove" it ever happened (if it ever came to that).
My insurers are Direct Line, the policy states that they will replace "broken glass". Obviously the screen isn't broken, but being bonded in it would be if it was removed!
I could contact Autoglass (their nominated glass replacement company) ... I don't know whether they'd replace a screen that clearly isn't damaged without telling Direct Line. Or whether they'd suggest I whack it with a brick and call them back (probably the most pragmatic option).
Whatever happens I will lose the car for another day or two - I seem to remember that bonded screens have to be left 24 hours before driving? I suspect a heated screen may not be a stock item either. Can they do the windscreen replacement in the open (i.e. at home on my drive), or does it have to be at a dealership? I believe that a bonded screen is "structural" so it's a bit of a worry that in less than 4 years it's stress cracked once and now come unbonded. Perhaps 204 bhp is too much for that bodyshell (flexing)?
The car is currently at the VW dealer in Guildford (and I'm at work in London) ... what do you think I should do?!
TIA
