I'd love to be able to help you with the satnav, but mine can't even recognise the local A roads, so I have no idea whether it has trouble locking on or whether it's just out of date.
The seals are virtually impossible to visually check, I've opened my doors up and not seen any trace of water, and yet they still leak. But I guess doing the sealant is worthwhile, and if it fixes it then you're one of the lucky ones.
The seals are virtually impossible to visually check, I've opened my doors up and not seen any trace of water, and yet they still leak. But I guess doing the sealant is worthwhile, and if it fixes it then you're one of the lucky ones.