Except For C0 Model

DTC detecting condition: 

• Defective keyless access CONTROL MODULE
• When inaccessible to ROM in keyless access CONTROL MODULE.

1. CHECK DTC  .
   1. Turn the ignition switch to ON.
   2. Perform the clear memory operation of ECM. Ref. to ENGINE (DIAGNOSTICS) (STI)>Clear Memory Mode . Ref. to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>Clear Memory Mode
   3. Turn the ignition switch to OFF.
   4. Remove and install the battery.
   5. Turn the ignition switch to ON.
   6. After 5 seconds or more, read DTC. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B1577 displayed?

   Yes: Replace the keyless access CONTROL MODULE. Ref. to SECURITY AND LOCKS>Keyless Access CONTROL MODULE

   No: Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.