The replacement buttons you will need are 5mm x 5mm x 1.5mm SMD Momentary 4 Pin Tactile Micro Switches which you can buy online in packs of 100 for only a few pounds. Product links below: Amazon.com – 5mm x 5mm Momemtary Tactile Micro Switches Amazon.co.uk – 5mm x 5mm Momemtary Tactile Micro Switches It’s a good … Continue reading How to Replace the Button or Battery in VW Passat Smart Key