No. 4 Key Additional Programming Procedure Changing: Procedure

Using the key, turn the ignition switch to the ON position. (The key can be either the valid key or an unprogrammed key)
NOTE:
- Although the security light flashes and DTC 15 is displayed when an unprogrammed key is used, this does not indicate an improper procedure. Continue to perform the procedure as indicated.
Connect the WDS or equivalent to the DLC-2.
Select "BODY/SECURITY/PATS (immobilizer) function" from the WDS or equivalent screen menu.

Select "Customer spare key programming enable" or "Customer spare key programming disable" from the WDS or equivalent screen menu. The key additional programming procedure is as follows according to the selected menu:

KEY ADDITIONAL PROGRAMMING PROCEDURE TABLE

Setting	Additional key programming procedure
Setting	Method using two valid keys	Method using the WDS or equivalent
Customer spare key programming enable	-	-
Customer spare key programming disable	x	-
?: Available x: Unavailable

Perform the security access according to the directions on the WDS or equivalent screen. (See SECURITY ACCESS PROCEDURE .)
After verifying that the PATS function menu is displayed again on the WDS or equivalent screen, select "Finish (this menu)" to finish the WDS or equivalent procedure.
After Step 6, wait 5 s or more and then turn the ignition switch to the LOCK position.