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CO/ZA

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Yes, it is well known that modding voids warranty.

With an ECU tune like this, you can broadly consider your engine and transmission warranty null and void.

You will be on the hook for $10k or so if you seriously damage your engine, so put that aside should you choose to do this.
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Rellims

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Yes, it is well known that modding voids warranty.

With an ECU tune like this, you can broadly consider your engine and transmission warranty null and void.

You will be on the hook for $10k or so if you seriously damage your engine, so put that aside should you choose to do this.
Technically true, has there ever been a verified report of a claim being denied, no. As stated before it's really hard for manufactures to prove a mod like an ECU tune actually caused the engine or transmission issue. They can't just deny a warranty claim just because the tune is there Magnuson-Moss Warranty Act requires them to prove the tune caused it. Easier for them just to honor the warranty.
 

CO/ZA

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Technically true, has there ever been a verified report of a claim being denied, no. As stated before it's really hard for manufactures to prove a mod like an ECU tune actually caused the engine or transmission issue. They can't just deny a warranty claim just because the tune is there Magnuson-Moss Warranty Act requires them to prove the tune caused it. Easier for them just to honor the warranty.
There has, please don't diminish the truth about this.

VW/Audi, Porsche, BMW, etc. have been doing this for nearly two decades at this point.

https://www.vwvortex.com/threads/warranty-voided-with-tune-removed.7659729/

https://f90.bimmerpost.com/forums/showthread.php?t=1910577

The ECU/DME will log any changes, and it will flag your car when the dealer connects to the Toyota Tech Support Mothership.

Tunes, mods, etc are always pay to play.
 

Joey_Midnight

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Sounds like a sponsored review lol what tuning software is it running? If its a piggyback then it normally sends false information to the ecu from the sensors to force it to run harder which is pretty unsafe for the long term and if it is a reflash then its probably going to void warranty when they check back and see the flash counter. I dont mind voiding warranties but id definitely like the torque management removed.
 

jspec_rnr

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I've had the OTT tune on my 5th gen and have brought it into 2 different dealership, they never noticed the tune when they're doing their diagnostics. At anytime you want to remove the tune and go back to the factory map, you can get with the original tuner to do that. I'm looking forward to do the OTT tune on my 6th gen.
 

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I sent my dealer (in Canada) an email with a summary of the OTT tune and asked them if it will void the warranty. Will report back with their response.
 

SC4Runner

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There has, please don't diminish the truth about this.

VW/Audi, Porsche, BMW, etc. have been doing this for nearly two decades at this point.

https://www.vwvortex.com/threads/warranty-voided-with-tune-removed.7659729/

https://f90.bimmerpost.com/forums/showthread.php?t=1910577

The ECU/DME will log any changes, and it will flag your car when the dealer connects to the Toyota Tech Support Mothership.

Tunes, mods, etc are always pay to play.
That’s VW, Audi, Porsche and BMW, not Toyota and certainly not OTT.
 

ModernDay4Runner

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I’m so tired of hearing about warranty, if you guys so scare of voiding it then don’t do it. Everyone knows the risk, no need to bring it up for every mod.
Why buy a 4Runner if you feel the need for speed? You mentioned your savings, do you have enough to buy a sports car that is meant for speeding around town, unlike a 4Runner? I've owned a few Mustangs, the last two had tunes and were fun to drive. When I drove my 4Runner, I acted a bit more mature. Not calling you immature, I am talking solely about myself.
 

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I’m so tired of hearing about warranty, if you guys so scare of voiding it then don’t do it. Everyone knows the risk, no need to bring it up for every mod.

There most certainly is. It is to make people myself aware of the repercussions involved with some of these mods.

That fact that you have so vehemently denounced people who point out that these mods may cause issues with the warranty is a giant red flag also and sort of paints you as a company shill. Not saying you are, but it creates the perception that you may be.
 

HVLA

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Of course they are going to say that. If you`ve ever had waranty experience with Toyota, they will find any reason to not honor it. From aftermarket intake filters, aftermarket exhaust systems, Especially aftermarket lift kits, wheels & tires, your own wiring of accessories etc.
With a tune ( if they find out about it) you can bet they will take issue with it, during any attempt at engine waranty.
Can you post any evidence of an OTT tune causing warranty issues? Because I have not found a single one for any of their tunes. They have been around for I think a decade and have tunes for basically every toyota.
 

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There has, please don't diminish the truth about this.

VW/Audi, Porsche, BMW, etc. have been doing this for nearly two decades at this point.

https://www.vwvortex.com/threads/warranty-voided-with-tune-removed.7659729/

https://f90.bimmerpost.com/forums/showthread.php?t=1910577

The ECU/DME will log any changes, and it will flag your car when the dealer connects to the Toyota Tech Support Mothership.

Tunes, mods, etc are always pay to play.
Your evidence that OTT tune voids warranty are german vehicles not tuned by OTT?
 

CO/ZA

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That’s VW, Audi, Porsche and BMW, not Toyota and certainly not OTT.
Your evidence that OTT tune voids warranty are german vehicles not tuned by OTT?
This not limited to the German brands, Ford and Dodge do it as well.

Toyota corporate does this by simply looking at checksum values, calibration validation numbers, etc.

Sure you may not be flagged during normal maintenance, but if you need an ECU, a new turbo, or you roasted your transmission then Toyota North America is going to do some digging before they issue the franchised dealer with a check for warranty work performed.

Tunes are always pay to play, no matter how much cringe marketing is out there for the product.

Per a GR Corolla thread on Reddit:

Tuning will void your warranty and it’s extremely easy to tell just by checking the CID number - source I’m a dealership tech
 

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I sent my dealer (in Canada) an email with a summary of the OTT tune and asked them if it will void the warranty. Will report back with their response.
The following is the response I received from my dealer:

"With any modification to engine control, the powertrain warranty and possible other warranties would be negated. The OEM calibration or configuration is one of longevity to match the offer of a safe and reliable vehicle. Once this is modified, the warranty from the manufacturer can no longer be honored as it is no longer operating within its designed parameters which the warranty was based upon.

Unfortunately, the engine ecu is networked to communicate and distribute multiple parameters throughout the majority of the on-board safety systems. If the engine ecu is compromised in any way, then many other systems can go offline and therefore be difficult to offer warranty against defects in these systems as well."
 

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The following is the response I received from my dealer:
Thank you for the input (y)

For the people asking for "proof" or examples that a waranty can be denied, luckily for you, your driving a toyota engine so finding those examples may be hard to do. I`d imagine that if there was an actual engine issue that wasnt part of a campaign, Toyota would likely deny service with your tune, or "performance" mods. It may even depend on your dealership too. Some may chose to overlook certain mods
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