RepairPal Certified shops can diagnose and repair your 2007 Mercedes-Benz GL320. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
The battery on a 2007 GL 320 CDI is under the drivers seat {UK} put the seat fully forward, a black plastic cover that doubles as an air diffuser for the rear climate control is removed and the battery is accesible.