If you have a later model Gaydon era Aston Martin DB9, Vantage, DBS, Rapide, Virage or Vanquish you likely have a pair of Crystal Key fobs, and one less fancy plastic Valet key.   Aston’s marketing team called the sapphire crystal key fobs Emotional Control Units (ECUs) – uhh, sure.  Like any modern automotive key fob they have a battery inside them that powers the transmitter for the buttons that lock and unlock the car.   Aston Martin’s service schedule recommends that the batteries be replaced each year during the annual dealer service.   While that’s the most conservative approach, you can save yourself some money and do it every 2-3 years, or even just wait until it stops working to tackle it yourself then.   It’s a very easy procedure you can tackle in just a few minutes on the kitchen table at home.  Let me show you how. Continue reading “Replacing the Battery in your Aston Martin Crystal Key Fob” →