When I go on long camping trips it is as part of a convoy, so I always take a spare set of keys and keep them in another vehicle just in case, I lose the first set, or they stop working. I'm very absent-minded and the former happens more often than it should.
A couple of general points about keys, camping and D4s that I know you guys are well aware of ( you taught me!) but I put it out there for any new lurkers:
1. The advantage of using the rear tailgate popper to access your car at a campsite is that it just pops the tailgate; it does not start up the computers, open out the rearview mirrors etc as does unlocking the vehicle which uses much more battery power because all these behind the scenes things happen.
2. Do not leave your key fob in the car "safe & sound" when at a campsite or visiting friends in the country as you feel city/urban security concerns are no longer valid. Even though you increase the risk of misplacing your key away from the vehicle because you are not in your usual environment where you have a regular place yuo keep them, take them out of the car and lock it, as this is the best way to get to and maintain full "power down" mode. This minimises power usage.
If you need to go to the car to get another bottle of wine/boutique beer /pimms & lemonade/milk for the latte out of the Engel, and let's face it if you are camping properly, you will need to make these trips, then follow these two rules to save power. Do not think because you have one of those wonderful dual battery systems and you are only parked up for two nights and one day that yuo have all the 12v power in the world to waste. You don't.
