So is there a real issue with the Tazer Mini?

Osinski

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Jose Carlos
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Alicante - Spain
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Jeep JLU Rubicon 3.6 Hella Yella
I have the Tazer JL lite and when I first set it up a couple of weeks ago all I changed was the tire size to 37.055 and turned on the ESS setting. After I was done I shut off the Jeep to watch how long it took before everything shut off and like WranglerMan said above it was about 45 seconds until the red Tazer light was no longer blinking. Up until today it has been flawless and a great addition to the Jeep...

I run my tires at 30 PSI and haven't change the TMPS limit so today I figured it was time to change it. After the change I did the same thing as before, shut the Jeep off and waiting to see how long the Tazer would blink. Well the dash and the lights next to the gearshift stayed on and would not shut off. They would cycle where the main dash light would go off, then the gearshift lights would blink, then the dash would come back on, and then Tazer would start blinking. The entire cycle would take maybe 15 seconds and start over. Also, there was a noise from the engine compartment or under the Jeep that sounded like a solenoid or a relay was activating on each cycle. It was very faint but could hear it on each cycle. I haven't investigated that noise further but plan to.

I was worried that the Tazer had just screwed something up and kinda still am at this point but after letting it sit for 10+ minutes everything ended up shutting off. I checked it at around the 5min mark and the light/dash/Tazer were still going. I can't say exactly how long it took to shutoff but I have been out to look at it a couple of times and everything is still off. Something has definitely changed and not knowing what/why is kinda frustrating.

The one other issue that came up was it not saying the tire pressure was set even though it did set it. I did see it say it once but not any of the other times I tried it. I tried it multiple times and it was a no go. I even seen a "try again" message a few times while trying it. Not the biggest deal because it did actually set it but anything that doesn't work like you expect it to is cause for a wtf moment.

When this all went down I ended up un-marrying and removing the Tazer to see if anything was different. The Jeep actually did the same thing. I don't know what to say at this point because I know what happened when I first programmed it and that was reinforced by WranglerMan's comments above so maybe this is normal, maybe not, but with the issues that some Tazer owners have been having there are growing concerns that something is up with this thing.
I had the same issue. And still having it...
I'm looking for a solution.
I have fused two main batteries and one auxiliar battery....



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Osinski

Active Member
First Name
Jose Carlos
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Alicante - Spain
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Jeep JLU Rubicon 3.6 Hella Yella
@EZMFE there are a few articles about Uconnect and they state the Uconnect can go into a cycle loop and not shut down and I have had this happen a few times but it was long ago and I had it happen just yesterday and I can tell you and be honest about it that it happened with and with a Tazer installed, currently my Tazer is married and I just have a few vehicle settings changed but am utilizing no live settings so thentazer is unplugged so now I will see what happens long term and go from there.
Each time that the Uconnect wake-up, is taking 16Amps. from the battery. In only a single night, the battery is dead...
 

jeepoch

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Jay
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2019 JL Wrangler Sport S 3.6L auto
Not much to add other than zero issues with the Mini. However, I have a Sport S with the UConnect 3 5". No cellular access, no navigation, satellite or over-the-air updates.

BTW, I've since added a satellite radio that connects directly with the UConnect 3 with a Viatech interface module, but I digress...

I purchased the Tazer JL essentially just to readjust the speedometer for 35" tires and lower the TPMS thresholds. I know I could have purchased the cheaper Lite model, but figured maybe I'd like to try out (and play) with some of it's other features.

However, after more careful consideration, I've decided not to use any of the 'live' features. I'll explain this in better detail shortly.

So after setting the above tire size and pressure calibrations, I disconnected the Mini, leaving it 'married' and replugged in the Security Gateway (SGW) Module.

I totally understand this is not the way the majority of Tazer purchasers [want] to use it. But Captain Obvious here; it can't drain crap let alone the battery if it's not plugged in.

I'm quite certain the UConnect 4 8" inch is just as bad a POS as the 3, maybe even worse. It has more connectivity functionality supporting all the latest Internet provided coolness like navigation and apps such as Carplay. However, like everything though, sophisticated things are complicated with potential side effects.

ZAutomotive (and others) have found a business niche in toying with certain Powertrain Controller variables that the Vehicle Manufacturer (FCA) does not necessarily want mucked with. The Tazer has to find ways to bypass all the nominal security precautions that were put in place to prevent tampering. The two minute reboot process which is required in order to reprogram (reflash) these new values into their non-volatile variables is necessary and can't be avoided. Skipping this step, or interrupting it, can cause the controller to become misconfigured and very likely misbehave.

The security light on the dash is trying to tell you something. Using any product like the Tazer is essentially short-circuiting the normal designed-in calibration and security process. This means that there is inherent risk involved, independent at whatever the programmer sales brochure may say.

I knew this upfront because in a former life I used to develop Powertrain Controller Software for Chrysler. I purchased the Tazer because even though the dealership would officially reprogram the N/V Ratio (speedo) for $125, they are prevented in altering the TPMS thresholds. Since I air down my tires while off-roading, I'm not happy with setting any tell-tale fault codes intentionally. Unfortunately the Tazer will only set a minimum tire pressure of 25psi so airing down to 15psi is setting fault codes anyway.

I like that there are products like the Tazer that gives us consumers more options for the way our Jeeps behave, but it may come at a cost (more than just price). I'm hoping that by 'marrying' the Tazer that it will reliably save the original values of all accessable (rather modifiable) variable calibrations. As long as it can successfully restore the manufactures original settings, I'm willing to play.

Lastly for you Jeepers with the UConnect 4 (over the air) internal cellular access radio, please think twice about leaving the SGW disconnected. This is FCA's (and the automotive industry's) mechanism to prevent remote intrusion to hackers over the built-in, on-board infotainment interface via the vehicle's Controller Area Network (CAN) bus.

I'm sure you've all heard the stories about hackers possibly gaining remote access to certain type of drive-by-wire vehicles. Jeeps are direct steering, but have drive-by-wire throttle and braking components. Especially the higher trim models.

So all 'live' features, while cool, potentially may open a security hole due to a non-intended side-channel access to the vehicle's control bus. I'm not saying this with certainty as an expert (I haven't been in the automotive industry in a while), but I am a Software Engineer and haven't seen any information or legal disclaimers to the contrary (by anybody).

Maybe ZAutomotive (and all the other third-party programmer providers) supply explicit safeguards against this, but their primary objective is to gain access to the vehicle bus network (in order to access and modify internal engine, transmission and body controller variables, not prevent it.

So please be aware of what these programmers provide (and/or probably what they don't).

ZAutomotive, et., al., please don't be angry with me if I'm exposing any trade secrets. I did purchase your product and will give you a favorable review. The Tazer JL Mini indeed does for me what you've advertised.

Jay
 
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