Most Prevalent IR4 Key and IR2 Programming Station Failures

Symptoms

IR4 Key Charging Issues

• Key LED does not blink red when on charger → Possible charger issue

• Key LED blinks red continuously, but never turns green → Charging circuit failure

• Key LED blinks red, but no LED response when button pressed after charging → Charging failure

• Key LED blinks red during charging, but turns orange when button pressed → Low battery warning

IR2 Programming Station Authorization Failures

• IR4 key does not authorize; IR2 station LED blinks red 3 times

• IR4 key does not authorize; no LED response on IR2 station

• IR4 key does not authorize; IR2 station LED is blue (communication OK, but low battery in key)

• IR4 key only authorizes in certain physical orientations

Cause

Compatibility Issues

• IR2 Programming Station: Designed in 2011

• IR4 Key: Introduced in 2022

• Incompatibility between legacy IR2 technology and newer IR4 keys causes communication and authorization failures

Battery Charging Issue in IR4 Key

• Faulty soldering on U2 charging chip

• Charging circuitry fails; key does not actually charge despite LED indicators

Firmware Issue in IR4 Key

• FW monitors battery voltage and sets a “low voltage” flag

• Flag is not cleared after recharging unless the key powers down after 30 seconds of inactivity

• Fixed in new firmware release (Dec 2023)

• Firmware update is possible via OKMs, not IR2 stations

Resolution Steps

For IR4 Key Charging Issues

1. Check charger power if no red blinking LED appears

2. If LED blinks red but never turns green after 8 hours, RMA the key

3. If LED blinks red but no LED on button press → RMA the key

4. If LED is orange after charging attempt → Low battery warning, RMA the key

For IR2 Programming Station Authorization Issues

1. If LED blinks red 3 times → Cross-coding issue

   • Identify correct SDC (key or station), RMA only the incorrect device

2. If no LED response → Compatibility issue → RMA the IR2 station

3. If LED is blue but key does not authorize

   • Charge the key fully

   • If issue persists, check firmware version

   • RMA the key if outdated or still not working

4. If key only works at specific angles → RMA the IR2 station

Workaround (if available)

• Use OKM (On-Key Module) for firmware updates on IR4 keys

• Avoid using IR2 Programming Stations with IR4 keys if possible

Additional Notes

• Orange LED = normal low battery indication

• IR2 programming stations are legacy hardware and may not be compatible with IR4 key enhancements

• Refer to the December 2023 firmware release notes for details

• Contact support for the RMA process and firmware update assistance