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Condensation in Boot

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I've a 2014 IS300H and it's been rarely used as I am working from home the last year.

As a result of lack of use, the Battery dies and I need to jump start it. 

I opened the boot and cover to the Battery compartment today and noticed a lot of condensation around the inside where the Battery is.

I had a 2 litre bottle of water in the boot and that was Full of condensation also.

Any idea what caused this and should I be concerned?






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Agreed. I bought one of these recently for the Saab but currently it's in the boot of the LS because there was a bit of condensation in the wheel well. Assuming you don't find a leak it's nothing to worry about. Just builds up through lack of use and the change of weather.

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If you remove the internal boot lid liner /trim, is the condensation in there too? You might have the same issue myself and Stuart had. Guide to removing the trim in the post (easy to do, 2 screws and 14 pegs to remove only).


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I previously noticed light condensation on my Battery also. So where the water ingresses through the boot seam crack, it runs down between the boot trim and the inner boot lid, dripping onto the lower boot threshold carpet. If there is sufficient water it drips down between the gap around the hybrid cover trim ( the tray that holds the tools). This water then evaporates (especially if the hybrid Battery is used and warms the surrounding air). This moist air rises, including into the quarter area on the left as it is linked. The coldest surface is the outer quarter panel skin, so condenses there (ie the compartment where the Battery is). In another post a member mentioned there was sufficient moisture to damage their amplifier located in the space around the hybrid Battery. Maybe remove the tray covering the hybrid Battery check there is no water collecting in this area around the hybrid cell and is the carpet damp near the boot opening or on the LH side?

As you say, get some dehumidification on the go in the interim. 

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