Low remote control battery may effect entry if the remote is cold. Kessy is heavy on remote battery use. You can always stick a new quality battery in and test e.g. Duracell. You don't really know the state of the Kessy batteries that are used when first manufactured e.g.. old stock / problematic manufacturers etc.
Not sure whether the Formentor warns you of a low remote battery or not on the front screen. Early Ateca's don't, may now. Arona's do pop up a message warning. It gets posted in the VCDS error code messages in both cases. If I see one of them in the error codes I change the battery in both remotes. Works out at 12 - 18 months. If you can read error codes with a dongle, vcds, Obdeleven etc, have a scan down, look for low battery in remote control.
Just float that up as something to check if it's more prevalent in cold weather. Where you keep the key if do button less entry door or boot, has a bearing. If in a bag or case, needs to be on the outside so the aerials in the car can read it, screened by contents of a bag or body, can be problematic. Had that, done that.
Not sure whether the Formentor warns you of a low remote battery or not on the front screen. Early Ateca's don't, may now. Arona's do pop up a message warning. It gets posted in the VCDS error code messages in both cases. If I see one of them in the error codes I change the battery in both remotes. Works out at 12 - 18 months. If you can read error codes with a dongle, vcds, Obdeleven etc, have a scan down, look for low battery in remote control.
Just float that up as something to check if it's more prevalent in cold weather. Where you keep the key if do button less entry door or boot, has a bearing. If in a bag or case, needs to be on the outside so the aerials in the car can read it, screened by contents of a bag or body, can be problematic. Had that, done that.