J.A.'s Toyota 4Runner Sport Edition
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Key Reminder Disable Mod:

Key Reminder Schematic
 
Concept:
As with any Toyota vehicle, when the 4Runner's ignition key is in the key cylinder with the key in the off or accessory position, and the driver side door is open, the key reminder buzzer will sound. This can get quite annoying when you are in and around the vehicle and want to run the stereo, program the Nav, clean the interior, perform a mod, etc. and just simply want to leave the key in the cylinder. This modification disables the key in ignition warning chime.
 
What needs to be accomplished:
This is a quick and simple mod that requires the cutting of only one wire to complete the mod. The wire we need to cut is attached to pin # 15 of the B6 connector mounted on the upper left side of the driver side interior relay/junction box. It is violet in color with a green stripe.
 
Remove driver side lower finish panel for access to driver side interior relay/junction box.
Start out by disassembling the lower dash area as we need access to the driver side interior relay/junction box. To access this area, first remove the two 10mm bolts holding the lower finish panel on. Pull the panel straight out to disengage 4 plastic clips still holding it on. The trim ring around the key hole will just pop out on it's own as you are doing this. Remove the wire harnesses attached to each of the switches located on the back side of this panel. Also on the back right side of this lower finish panel is the room temperature sensor harness (cooler thermistor), detach this from the panel as well. You may leave the fuel door release and the hood release handles attached to the panel. The panel can be lowered to the floor now.

Remove driver side
lower finish panel

Pull to release 4 clips

Remove lower bracket:
Remove two 10mm bolts holding the metal bracket around the bottom of the steering column. Disengage the 2 claws and remove the instrument panel lower left hand bracket. Set bracket aside.

Remove instrument panel
lower bracket

Disengage 2 claws

Disconnect the B6 connector mounted on the upper left side of the relay/junction box.

Disconnect connector B6
on the Body ECU

Remove the electrical tape connecting B6 to connectors B5 and B4 which are directly below B6. Then remove some more of the electrical tape on the B6 connector to expose the wires. Look for the violet with green stripe wire which is connected to Pin 15. Cut it in half, and tape up the exposed ends.
 

Remove tape to expose wires

Cut Violet with Green stripe
wire in half

Tape up and reconnect to ECU

Put some tape back where you removed it earlier, and reconnect B6 to the Body ECU. Put everything back together.
 
Now with the key in the ignition and the door open test that the buzzer no longer chimes.
 
 


 
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