Code
B2613
Generic
B — Body
No Response from Remote Keyless Entry Transmitter
Views:
UK: 0
EN: 4
RU: 1
AI status
Completed
Completed
100%
Causes
- Dead or weak battery in the remote (key fob)
- Faulty remote (transmitter) or worn buttons
- Receiver/antenna circuit fault in BCM or separate RKE receiver module
- Loose, corroded or disconnected antenna/pigtail or connector
- Vehicle battery low or poor vehicle ground affecting receiver
- Loss of transmitter programming or corrupted BCM memory
Symptoms
- Lock/unlock buttons on the remote do not operate doors or panic
- No LED activity on key fob when button pressed
- Vehicle does not respond to remote unlock/lock but works with physical key
- Intermittent or inconsistent remote operation
- No RF activity reported by diagnostic tool or BCM entries for remote presses
What to check
- Verify warning lamp/messages related to RKE in instrument cluster
- Check and replace key fob battery, verify LED on fob blinks when pressed
- Try spare remote(s) to determine if issue is single transmitter or receiver
- Scan BCM/BCI module for stored DTCs and live data for remote button events
- Inspect fuses and power/ground circuits for BCM/RKE receiver
- Visually inspect antenna, connectors and coax; check for damage or corrosion
Signal parameters
- Typical carrier frequency: ~315 MHz (North America) or ~433.92 MHz (Europe/Asia) — verify vehicle spec
- Pulse trains of encoded data (ASK/OOK amplitude shift keying / on-off keying)
- Expected key press event at receiver: distinct bursts when button pressed (variable duty cycle)
- Transmitter supply voltage when new battery installed: nominal cell voltage ~3.0V (coin cell)
- Receiver input should show RF bursts when remote pressed; absence indicates transmitter/antenna/receiver fault
Diagnostic algorithm
- Verify basic conditions: check vehicle battery voltage and BCM fuses/grounds. Repair as needed.
- Replace or verify key fob battery. Confirm LED/activity on fob and retry.
- Test known-good spare remote. If spare works, suspect primary transmitter; repair/replace transmitter.
- Use a scan tool to monitor BCM for remote button press events. Press key and confirm BCM registers events.
- If BCM shows no events, perform RF test: with RF detector or oscilloscope at receiver/antenna, observe for RF bursts while pressing remote.
- Inspect the receiver antenna, connectors and coax for open/short/corrosion. Repair wiring/connectors as needed.
- Verify power and ground to the RKE receiver/BCM. Check for blown fuses, relays, or voltage drops on supply lines.
- Attempt remote reprogramming/pairing per service manual. If programming fails, capture error details from scan tool.
- If receiver hardware is confirmed dead (no RF detected and good remotes), replace RKE receiver or BCM module per manufacturer procedure and reprogram remotes.
- Clear DTCs, confirm proper operation of all remotes, and perform final system check for intermittent faults.
Likely causes
- Key fob battery is depleted
- Transmitter internal circuit or antenna broken (LED not lighting)
- Antenna/coax to BCM is open or shorted
- BCM/RKE receiver not powered due to fuse or wiring fault
- Transmitter not programmed to vehicle or lost pairing after battery replacement
- Intermittent ground or low vehicle battery voltage causing receiver failure
Fault status
Status
No response received from remote keyless entry transmitter. Remote button presses not detected by receiver/BCM; RF transmission absent or not recognized.
Repair difficulty: Medium
Diagnostic time: 1.0 - 2.5 hours
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