Mercedes Sprinter NCV3 Roof Leak Fixed!

Sprinter Shuttle
Sprinter Shuttle
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Published 2020-12-19
After putting some thought into the possible solutions to the notorious NCV3 roof leak problem, this solutions seems to be the most effective and serviceable.

Basically, silicone around the perimeter of the forward cover of the factory NCV3 A/C system. I recommend doing this after a fully drying out entire area around and under the A/C unit to avoid trapping moisture under the cover.
All Comments (6)
  • @jasonwong9071
    Having same problem was going to remove then seal but will go with your solution as it will save alot of time and easy access for future issues. Thanks!
  • @justingillott1184
    I am going to try this as soon as the weather breaks here in PA. My roof AC seal was already replaced at the dealer under warranty and it leaks more now than before they "fixed" it. Now that it is out of warranty, they want $3000 to do it again. I'll sell the van before I let them mess with it again.
  • @jaysonbird3975
    My 3rd attempt was to seal around the front cover and it worked for a while.. frustrating vehicle. The bluetec system is also a nitemare