B0105
Immobilizer Key Count Exceeded
2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48
Moderate SeverityBodyGeneric (SAE)
Description
The maximum number of keys programmed to the immobilizer system has been exceeded or the key count is invalid.
Symptoms
- Cannot program additional keys
- Security light on
- Key programming procedure fails
Common Causes
- All key slots used
- Immobilizer memory error
- Unauthorized key programming attempt detected
- Module requires reset
Diagnostic Steps
- Check number of keys programmed
- Attempt key count reset procedure
- Scan immobilizer for stored key data
- Verify key programming with dealer tool
Repair Notes
Use dealer tool to reset key count and reprogram all valid keys.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0105 on Other Vehicles
Common Questions
What does code B0105 mean on a 2019-2024 BMW 3 Series G20?
B0105 stands for "Immobilizer Key Count Exceeded". The maximum number of keys programmed to the immobilizer system has been exceeded or the key count is invalid.
What are the symptoms of B0105 on a BMW 3 Series G20?
Common symptoms of B0105 include: Cannot program additional keys, Security light on, Key programming procedure fails.
What causes B0105 on a 2019-2024 BMW 3 Series G20?
Common causes of B0105 include: All key slots used, Immobilizer memory error, Unauthorized key programming attempt detected, Module requires reset.