I will get the vin for you monday found this on the Kenworth website.
Both doors are locked with a single click from the second button and a third button allows operators to enable and disable the pre-trip light check without entering the cab. Retrofit kits for T680 and T880 trucks are available from a Kenworth dealer.
“Our customers said they wanted a simple, secure and affordable keyless entry system and this remote system delivers that and more,” said Kurt Swihart, Kenworth marketing director. “This is a straightforward system that remotely locks and unlocks your truck doors and helps keeps your truck secure.”