There are several different ways to update the computer in the JL for new tires, gear changes, and even to change the status of the sway-bar. 

First and foremost you can go to the dealer and pay a service technician to program it. That’s what we did when the 35’s were first installed. The $150 service did not include lifetime changes, and despite what was thought at the time, it did not allow the user to make changes to any systems. It was not an addon program full of cool user options but simply a dealer reprogram of the Jeep. Not only was it not a gateway to full control of your Jeep, but it was also 3 times the price of having your tire size changed on the JK.

Tazer JL by Z Automotive

So what is it? the Tazer Jl is the aftermarket solution to changing your tire size, gear ratio, transfer case, TPMS and more. Priced at $329 it is twice the price of a dealer tune but if you plan to add parts gradually over time and will need several updates it easily pays for itself. Tuning is done via the OBDII port and a bypass module plugged into the SGW port. (The bypass module only needs to be installed during programming or while using the Live features. If the Tazer JL is removed the SGW bypass can be removed as well.)

What options can you program?

From Z Automotives Website:

These are all accessed using the dash display, using steering wheel buttons to navigate the menus.

Settings – once the Tazer is “married” to the Jeep, the following menus can be accessed. Unmarrying the Tazer JL will bring the settings back to stock.
Perf menu:
Adjust for alternate tire sizes up to 41″
Adjust for alternate axle gear ratios
Adjust for an alternate transfer case LO range ratio

TPMS menu:

Disable TPMS system if desired
Change front/rear TPMS warning PSI limit

Radio menu:

Disable Backup camera
Enable Cargo/front/undercarriage Camera input
Enable CD audio input
Disable TravelLink (weather warnings included)

Lighting Menu:

Change DRL region (type)
Change DRL location
Disable DRL Dropout
Enable Fog lamp output
Disable Fog lamp dropout
Disable Halo’s
Set LED 3rd brake light type
Set LED tail lamp type
Set LED front turn signal type
Set Trailer Tow output for use with Mopar kit

Other menus:

Disable/Enable Electronic sway bar – for axle swaps or to run disconnected at any speed or drive mode
Disable/Enable Front Axle Disconnect
Disable/Enable Front and Rear Lockers
Enable Aux switch settings on the radio
Enable Blind spot detection (sensors required)
Change cluster splash screen to Wrangler/Sahara/Rubicon
Enable/Disable PANIC button on remote

Live features – these run only while the tazer is plugged in:
Light shows: Can be accessed from the key fob or from the on-screen menu. 6 pre-set light shows and 3 make-your-own shows included. Set from the factory to only operate when parked, but can be unlocked for off-road and emergency personnel use.

Disable Navigation in-motion lockout – enter addresses while the vehicle is moving
Disable camera lockout – use the backup camera and/or added cargo/front/undercarriage camera at any speed for any length of time
Auto Traction Kill – can be set to turn off traction control upon start-up
Auto StopStart Disable – can be set to disable AutoStopStart upon vehicle start-up
AutoPark Disable – can override the AutoPark system
TurnCAM – can turn on backup camera whenever turn signals are used (great for when the doors are off)
0-30 and 0-60 timers
Cooldown mode – run engine fans when Jeep is off, to aid in cooldown
Winch mode – raise engine idle to 2000 RPM while winching or jumping another vehicle
Clear Check engine light

My thoughts.

The Tazer JL may seem intimidating to some folks. The lack of screen in your hand means that you have to navigate the complex menus using the buttons on the steering wheel. All of this is done from the audio screen, which unfortunately is constantly scrolling the radio status. It’s less intrusive with the music playing but there are constant update interruptions either way. Once you get used to them they are easy to ignore and navigate around. The other oddity is using the cruise on/off button to select actually turns the cruise on and off. This gives you the status message over what you are doing. Not a deal breaker but it certainly will bother some folks.

Right now I have the tire size changed to accommodate the 37-inch Yokohama XMT tires, and I disabled the TPMS. This setting removes the status message and the low-pressure warnings, no lights on the dash and the TPMS menu is gone. It does leave a remnant. After the 5 chime startup dings, there is a 10-15 second delay and then a final chime. After installing, uninstalling, and installing again I was able to figure out that the Jeep is still giving the warning chime for the TPMS system, even though it is turned off. I have been talking to tech support to see if there is a fix or if it’s going to be a permanent minor annoyance.

Outside of that I really like the Tazer JL. The form factor is very reminiscent of the AEV ProCal and it works very well once you get over the initial learning curve.

What are you using to program your JL?

Check out the Z Automotive website for more.

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William Connor

As the Editor, William is responsible for all the good, the bad, the ugly and the indifferent that happens at 4WAAM. William brings a wide range of experience to this role. He also wields a freely shared...

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  1. Virtually useless to me but my case may be somewhat unique. I have installed a Prodigy Performance Stage 2 Turbo Kit. With this kit an hptuners Mvpi2 tuner was included so I can change tire size and gear ratio already. To me most other capabilities of the Tazer are pretty much stupid. The only one which interests me is the cool down function because of the turbo. Sorry guys, not for me.

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