[JSK]

What is the cause of condensation in a car with retractable roof?

 

[boosted]

Water

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[guitaristanime]

Brilliant.


Ingress of water, you could chase this issue for years front to back, these are potential causes if you want to go down the rabbit hole.........

• Heater matrix pipes from the bay into the cabin, check if they are leaking, pretty obvious dampness from around the area under the glove box
• Header seal that runs across the length of the windscreen and down the A pillars
• Blocked A pillar cups
• Poor sealing of windows against the roof seals
• Roof seals on both hard and soft top
• Water ingress inside door card (normally caused by bad weather seal along glass to door
• Sill drains blocked and water backing up (feel behind seat belt tower)
• Sill drain plastic one way flap broken, causes condensation back up from the road
• rain rail on soft top worn or damaged
• rear window seal
• Boot lid seal broken
• Bad rear light seals
• Aerial seal broken
• Condensation around battery where vent tubes are not fitted
• A missing drain grommet (anywhere around the underside of the car)

Probably missed a load, I can't really be bothered to chase condensation issues anymore unless there's actual proper water ingress somewhere as it's just expensive and I don't daily my MX-5s