When the weather is hot, the windows on my 500SL (mostly the driver's side) seem to be so sticky that sometimes it makes it impossible that I raise it up completely, even if I leave the engine running for more battery power. When the car is cooled it will go up easily. Those windows go down and up every time I put the softtop down.
I suspect the carwash use products that produce this annoyance.
Is there a trick or product that would help without dirtying the windows?
Thanks for any tip or solution.