Originally Posted by
Flexray
If he can get the battery replaced under warranty, he should. But I wouldn't get the dealer to diagnose the draw. Manufacturers try everything they can to deny warranty claims.
Dealership technicians are paid flat rate (piece work). Easy things like fluid services, brakes, steering, and suspension pay well and are easy to make time on. Diagnostics and problem solving are a lot harder to make time on. If the technician is not good at time management he/she is going to get hosed on his paycheque. This forces the technician to put the need to get paid above what is best for the customer and their vehicle. It has created a system where the more you know the less you make. This has driven most of the talent out of the dealership. Each dealer usually has one or two skilled old guys that are close to retirement and are just riding it out. But the shop is generally staffed with a bunch of parts throwers.
Parasitic draws are one of the hardest and most expensive problems to solve. It will take a skilled technician a few hours to figure out and usually results in a $2000 module being replaced. If it gets misdiagnosed, sadly the customer still gets arm-twisted into paying the bill and still has a broken vehicle.