DTC 2-1: EEPROM Communication Error; DTC 2-2: EEPROM Checksum Error: Procedure

1. Exit diagnosis mode and wait for 10 seconds.
2. Disconnect the cable from the negative (-) battery terminal.
   NOTE:

   • After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
   • When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION .
3. Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
   NOTE:

   When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION .

4. Turn the engine switch on (IG), and then check for the current DTC and historic DTC again. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   Current DTC 2-1 or 2-2 is output	A
   Historic DTC 2-1 or 2-2 is output	B

B → See step   2 

A: Go to next step 

1. Press the SERVICES button and check the LEXUS Link condition with the LEXUS Link call center.

   OK

   System operates normally.

   NG

   System does not connect to LEXUS Link call center (current DTC 2-1 or 2-2 is stored).

NG → See step   4 

OK → END 

NEXT → See step   5