In this video, you will see the process of locating the Body Security Module (BSM), which is often referred to as the Smart Junction Box (SJB) or keyless entry module depending on the exact year of your truck. If your factory door keypad has stopped working, you need to find your permanent 5-digit keyless entry master code, or your remote key fobs refuse to program, this visual guide shows you exactly where to look inside the cabin to find it.
How this video helps you: The Body Security Module is mounted out of sight behind the passenger cabin interior panels to keep it safe from moisture and dust. Because it is completely hidden from view beneath trim pieces and insulation, it is impossible to see without dismantling specific parts of the interior layout. This video points directly to its exact location on the vehicle so you can see it clearly. You will see which interior components must be unbolted or unclipped to reveal the module, and you will see exactly where the factory sticker containing the master door lock code is printed on the module housing so you can read it without having to unbolt the unit.
Common symptoms of an issue with the Body Security Module: The BSM/SJB controls the vehicle’s security functions, remote keyless entry, power locks, interior lighting delay, and anti-theft systems. When this electronic module suffers from internal circuit failure, water intrusion, or software glitches, it creates these common problems:
- Door Keypad Does Not Respond: The buttons on your driver’s side door pillar do not light up or unlock the doors when pressed, even if you know the correct combination.
- Key Fobs Refuse to Program or Work: The truck will not enter programming mode to accept new remote key fobs, or your current remotes suddenly stop locking and unlocking the doors despite having fresh batteries.
- Erratic Power Lock Behavior: The power locks may cycle on and off rapidly on their own while driving, refuse to lock when using the interior switches, or lock you out of the truck unexpectedly.
- Interior Dome Lights Stay On: The interior lights refuse to turn off after closing the doors, or they flicker intermittently while driving, which can drain your vehicle’s battery overnight.
- Factory Alarm False Triggers: The security alarm or panic horn randomly starts blasting in the middle of the night for no apparent reason when the vehicle is parked and locked.
Watch the video to see the exact location inside the cabin and find your master door code easily!