B0110low severityBody
Keyless Entry System General Fault
on 2002 Toyota 4Runner 3.0L V6 · 4WD
What this code means
A general malfunction in the keyless entry system. The system is not responding to remote key fob commands.
Symptoms
- Remote lock/unlock not working
- Key fob buttons unresponsive
- Must use physical key
- All remote functions lost
Common causes
- Dead key fob battery
- Faulty keyless entry receiver
- Antenna issue
- BCM keyless entry module failure
- RF interference
Diagnostic steps
- Replace key fob battery
- Test with second key fob
- Check keyless entry antenna
- Scan BCM for related codes
- Check for RF interference sources
Repair notes
Replace key fob battery first. If issue persists, check receiver module and antenna.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery