If you never replace the battery in a BMW FOB better to send it in to a guy that can replace it without damaging the circuit board. If you have the original key I believe the EWS chip is solder to the board and if you damage the board you may not be able to start your car. After market key use a chip that is not soldered to the board.

Just my 2₵ advise and it's only worth 2₵.

Next time tell her to break the passenger side window or a rear door window. They are a lot easier to fix compare with the fix window that she broke.

__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD