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Countryman - Mini Leak - katykitten
Found a large leak in back of passenger footwell, smells of fish
Any ideas what’s caused this?
Countryman - Mini Leak - Adampr

Do you have a sunroof?

Countryman - Mini Leak - kiss (keep it simple)

Sounds (smells?) like a leaking heater matrix. Check your coolant levels.

Countryman - Mini Leak - Adampr

Sounds (smells?) like a leaking heater matrix. Check your coolant levels.

For some reason, I read it as 'back passenger footwell) and was trying to work out how water could get back there. Yes check Aircon condenser drain and heater matrix.

Countryman - Mini Leak - Andrew-T

If the leak is 'large' and from the heater matrix, the level in the coolant reservoir must have dropped noticeably. Hopefully you look at it occasionally, and know where it usually is ?