CrazyChino

I know the NX have the electronic parking brake built into the calipers. Besides using a factory computer to de-energize the rear calipers, is there a way to put the rear caliper in service mode to replace the rear pads? I read in a training manual that u can remove the motor and turn it with a hex key. By doing that, u have to replace the seal too

no1SomeGuy

Yes there's a way. From the shop manual:

When not Using the Techstream:

1. Turn the engine switch off.
2. Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.SST:
   
   09843-18040
   
   NOTICE:
   
   Do not connect the wrong terminals, as this will cause parts to be damaged.
   
   [img]Resources/C309227C01.png[/img]*1
   DLC3
   
3. Turn the engine switch on (IG).
4. Within 8 seconds, operate the electric parking brake switch (integration control and panel assembly) to perform 3 on operations on the lock side (off (release) to on (pull)) and 3 on operations on the release side (off (release) to on (push)).NOTICE:
   
   If the operation is performed too quickly, the system may not respond. If the system does not respond, perform the operation again at a slower speed.
   
   HINT:
   
   The parking brake indicator light (red) flashes (0.25 second intervals).
   
5. Depress the brake pedal, and then push and hold the electric parking brake switch (integration control and panel assembly) to the release side for 5 seconds or more.
   NOTICE:
   • Perform this procedure with the engine switch on (IG).
   • Hold the brake pedal until the system changes to pad replacement mode. If the brake pedal is not depressed, the cylinder boot may become twisted.
   • When the system changes to pad replacement mode, DTC C13A7/43 may be stored. If the DTC is stored, clear the DTCs after the procedure (rear brake pad replacement, etc.) is complete.
   HINT:
   
   After a short time passes, the parking brake actuator assembly operates (if operated from the parking brake locked condition, the motor of the parking brake actuator assembly is temporarily stopped after being operated and then operation starts again), and once the assembly finishes operating, the parking brake indicator light (red) flashes slowly (1 second intervals) (nut moves back inside the cylinder and system enters pad replacement mode).
   

(b) Turn the engine switch off.

CrazyChino

Thanks.

But there is 1 step I don't understand... in step 4, it says 3 on operation on the lock side and 3 on operation on the release side.

brook41

Here's a thought, couldn't you just turn off the vehicle in neutral or reverse so the emergency brakes don't engage?

no1SomeGuy

The problem is the piston in the caliper needs to be retracted fully to replace brake pads.

CrazyChino

no1SomeGuy

Sounds to me like pull the parking brake thing 3 times and then push it 3 times. Not the first time I've seen Toyota/Lexus use silly things like that to activate things...on the older Rav4's you could do the "tap dance" where you push/hold the brake and handbrake a bunch of times to turn off the traction and stability systems.

CrazyChino

no1SomeGuy

I already bought a TPMS programmer (Autel TS501) and will be just buying a scan tool with parking brake functions in it when I start doing brakes once the warranty is done. A few hundred bucks for a decent scan tool is worth it over the life of a vehicle.

CrazyChino

Rozay604

iTrader: (1)

CrazyChino

Rozay604

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CrazyChino

no1SomeGuy

The one from Toyota themselves.