Software version 68733601AA - 98 MPH speed limiter

[Captain Howdy]

Are software updates automatic or manual? (Never looked for a setting. Yet...)

A technical service bulletin is a part of maintenance and warranty. It goes into your service record with the dealership. It's about as optional as are oil changes. You get notified and make an appointment. Dealership flashes your PCM to apply the updates.

 

[RADA]

A technical service bulletin is a part of maintenance and warranty. It goes into your service record with the dealership. It's about as optional as are oil changes. You get notified and make an appointment. Dealership flashes your PCM to apply the updates.

Thanks.

 

[JS59]

This thread should be pinned. Thank you for starting it and sharing important information. Did my own research. Very vague and inconclusive, which I find unsettling. From what I gather, the service bulletin claims that some RHOs have the ability to exceed the electronic speed limit, which could compromise the integrity of the tires, being that they have a 118 MPH rating.

BUT THE MANUFACTURER'S SOLUTION TO THIS PROBLEM IS TO QUIETLY TAKE 20 MPH OF PERFORMANCE OUT OF THESE VEHICLES. To me, that doesn't make sense. 240 trucks were released with a 'computer glitch' that allows them to 'wander beyond' the electronically limited 118 MPH governor. Our concern is the tires, not some dirty secret with our truck. To address this problem, we've released a TSB that detunes performance by 20 MPH.

I'm not trying to offend anyone or stress anyone out but, to me, this sounds like it could be a cover-up. If 239 vehicles were released with this ability to wander beyond the electronic speed limit, wouldn't the fix be to correct the glitch and lock them into the 118 MPH limit instead of throttling them back to 98 MPH? Something doesn't add up. Something smells rotten in Denmark.

It doesn't matter whether or not you INTEND to drive past 100 MPH or not. This should be unsettling and troubling to every owner or pre-owner of the vehicle. What if this is a cover-up and an omen of a major engine flaw in some of these vehicles? Who does it affect? How far does the quality control problem go?

Here's a scenario that is PURELY SPECULATION; NO FACT WHATSOEVER, just to make an important point. Some vehicles 'drift beyond' the electronic speed limit. POSSIBLE TRANSLATION: We've discovered faulty wrist pins in the engines of many of these vehicles. It's too expensive to recall them all and replace the engines so we will QUIETLY attempt to side-step the problem by blaming it on computers and tires and apply an undocumented duct tape solution that detunes the trucks, takes away 20% performance and minimizes the chances of the engines coming apart due to wrist pin failure.

The VIN identifies which trucks have this problem and which do not - IF YOU ALREADY HAVE YOUR TRUCK!!! If, like me, your truck is still being built...YOU HAVE NO WAY TO KNOW. The recall only addresses those trucks that are out. Stellantis CERTAINTLY is not going to reveal which trucks currently being built have this problem!!!

What can we do? You can pull the plug or you can wait until your truck is delivered and take it for a test drive, BEFORE SIGNING, and drive it to 100 MPH to see if it bounces off of a duct-tape speed limiter or continues to 105, 110, etc. Great way to break-in a brand new truck, huh? And...your dealership won't have a problem with that, will they? Haha! Are we having fun yet??

I don't know what do to. This is above my pay grade.

I'm certainly not the most technical guy on this board, but an engine wrist pin has no idea how fast the vehicle is moving. If that was the issue, I think it would show up under hard acceleration/high RPM - not just when the vehicle is going "too fast". I could ease up to 118 MPH with a lot less load (and probably RPM) than if I floored it for a quarter mile time. Plus, if people are doing 1/4s with the JB4 tune and the engine is surviving, it doesn't seem like the engine is grenade-ready. Just one mans' view . . .

 

[Captain Howdy]

I'm certainly not the most technical guy on this board, but an engine wrist pin has no idea how fast the vehicle is moving. If that was the issue, I think it would show up under hard acceleration/high RPM - not just when the vehicle is going "too fast". I could ease up to 118 MPH with a lot less load (and probably RPM) than if I floored it for a quarter mile time. Plus, if people are doing 1/4s with the JB4 tune and the engine is surviving, it doesn't seem like the engine is grenade-ready. Just one mans' view . . .

You may be right, but nothing taxes and tests an engine like running it upstairs. Top speed is where they approach their limits. That's why a top speed is a badge of quality for sports vehicles. If a Hellcat is limited to 160 MPH, it implies a bullet-proof engine. But that was just a made-up scenario to make a point. I'm not saying that there is a wrist pin problem. It could be a piston problem or a ring problem or a sensor problem, whatever. The point is... WHAT AM I BUYING FOR $80K?

 

[OldSchool]

This thread should be pinned. Thank you for starting it and sharing important information. Did my own research. Very vague and inconclusive, which I find unsettling. From what I gather, the service bulletin claims that some RHOs have the ability to exceed the electronic speed limit, which could compromise the integrity of the tires, being that they have a 118 MPH rating.

BUT THE MANUFACTURER'S SOLUTION TO THIS PROBLEM IS TO QUIETLY TAKE 20 MPH OF PERFORMANCE OUT OF THESE VEHICLES. To me, that doesn't make sense. 240 trucks were released with a 'computer glitch' that allows them to 'wander beyond' the electronically limited 118 MPH governor. Our concern is the tires, not some dirty secret with our truck. To address this problem, we've released a TSB that detunes performance by 20 MPH.

I'm not trying to offend anyone or stress anyone out but, to me, this sounds like it could be a cover-up. If 239 vehicles were released with this ability to wander beyond the electronic speed limit, wouldn't the fix be to correct the glitch and lock them into the 118 MPH limit instead of throttling them back to 98 MPH? Something doesn't add up. Something smells rotten in Denmark.

It doesn't matter whether or not you INTEND to drive past 100 MPH or not. This should be unsettling and troubling to every owner or pre-owner of the vehicle. What if this is a cover-up and an omen of a major engine flaw in some of these vehicles? Who does it affect? How far does the quality control problem go?

Here's a scenario that is PURELY SPECULATION; NO FACT WHATSOEVER, just to make an important point. Some vehicles 'drift beyond' the electronic speed limit. POSSIBLE TRANSLATION: We've discovered faulty wrist pins in the engines of many of these vehicles. It's too expensive to recall them all and replace the engines so we will QUIETLY attempt to side-step the problem by blaming it on computers and tires and apply an undocumented duct tape solution that detunes the trucks, takes away 20% performance and minimizes the chances of the engines coming apart due to wrist pin failure.

The VIN identifies which trucks have this problem and which do not - IF YOU ALREADY HAVE YOUR TRUCK!!! If, like me, your truck is still being built...YOU HAVE NO WAY TO KNOW. The recall only addresses those trucks that are out. Stellantis CERTAINTLY is not going to reveal which trucks currently being built have this problem!!!

What can we do? You can pull the plug or you can wait until your truck is delivered and take it for a test drive, BEFORE SIGNING, and drive it to 100 MPH to see if it bounces off of a duct-tape speed limiter or continues to 105, 110, etc. Great way to break-in a brand new truck, huh? And...your dealership won't have a problem with that, will they? Haha! Are we having fun yet??

I don't know what do to. This is above my pay grade.

Well, I don't like that read. I just picked my RHO up from the dealer yesterday after having my climate control system fixed (it had never functioned), even though it sounds silly I made sure to verify that no software updates were done that lower the top speed. File that under 'things you never thought you would have to do with your new performance truck'!

 

[Captain Howdy]

Well, I don't like that read. I just picked my RHO up from the dealer yesterday after having my climate control system fixed (it had never functioned), even though it sounds silly I made sure to verify that no software updates were done that lower the top speed. File that under 'things you never thought you would have to do with your new performance truck'!

I don't like it either, not even a little bit. I hope you're right.

 

[OldSchool]

I don't like it either, not even a little bit. I hope you're right.

I verified it on my own...

 

[RamFan]

I verified it on my own...

You mean you accessed the computer to make sure the version you had was without the 55mph limiter. Obviously you would never go faster than the posted limit.

 

[OldSchool]

You mean you accessed the computer to make sure the version you had was without the 55mph limiter. Obviously you would never go faster than the posted limit.

If I were to exceed the posted speed limit, obviously I would do that off road or on a closed course somewhere. Right?

 

[gram10]

You may be right, but nothing taxes and tests an engine like running it upstairs. Top speed is where they approach their limits. That's why a top speed is a badge of quality for sports vehicles. If a Hellcat is limited to 160 MPH, it implies a bullet-proof engine. But that was just a made-up scenario to make a point. I'm not saying that there is a wrist pin problem. It could be a piston problem or a ring problem or a sensor problem, whatever. The point is... WHAT AM I BUYING FOR $80K?

that is not correct...

power is not the only major factor in top speed, drag increases with speed at a squared rate, meaning if you double your speed, you're quadrupling the drag.

in regards to the engine, it is under the most stress at peak torque, not high rpm. These engines aren't going past 6,000 rpm, I'm sure they're more than capable. In fact baja mode will downshift if the engine speed dips under 4,500 rpm.

 

[RamFan]

If I were to exceed the posted speed limit, obviously I would do that off road or on a closed course somewhere. Right?

Exactly. I didn't want anyone to get the wrong impression.

Chris

 

[cconnorhtx]

If I were to exceed the posted speed limit, obviously I would do that off road or on a closed course somewhere. Right?

Definitely in Mexico

 

[Jimmy07]

This thread should be pinned. Thank you for starting it and sharing important information. Did my own research. Very vague and inconclusive, which I find unsettling. From what I gather, the service bulletin claims that some RHOs have the ability to exceed the electronic speed limit, which could compromise the integrity of the tires, being that they have a 118 MPH rating.

BUT THE MANUFACTURER'S SOLUTION TO THIS PROBLEM IS TO QUIETLY TAKE 20 MPH OF PERFORMANCE OUT OF THESE VEHICLES. To me, that doesn't make sense. 240 trucks were released with a 'computer glitch' that allows them to 'wander beyond' the electronically limited 118 MPH governor. Our concern is the tires, not some dirty secret with our truck. To address this problem, we've released a TSB that detunes performance by 20 MPH.

I'm not trying to offend anyone or stress anyone out but, to me, this sounds like it could be a cover-up. If 239 vehicles were released with this ability to wander beyond the electronic speed limit, wouldn't the fix be to correct the glitch and lock them into the 118 MPH limit instead of throttling them back to 98 MPH? Something doesn't add up. Something smells rotten in Denmark.

It doesn't matter whether or not you INTEND to drive past 100 MPH or not. This should be unsettling and troubling to every owner or pre-owner of the vehicle. What if this is a cover-up and an omen of a major engine flaw in some of these vehicles? Who does it affect? How far does the quality control problem go?

Here's a scenario that is PURELY SPECULATION; NO FACT WHATSOEVER, just to make an important point. Some vehicles 'drift beyond' the electronic speed limit. POSSIBLE TRANSLATION: We've discovered faulty wrist pins in the engines of many of these vehicles. It's too expensive to recall them all and replace the engines so we will QUIETLY attempt to side-step the problem by blaming it on computers and tires and apply an undocumented duct tape solution that detunes the trucks, takes away 20% performance and minimizes the chances of the engines coming apart due to wrist pin failure.

The VIN identifies which trucks have this problem and which do not - IF YOU ALREADY HAVE YOUR TRUCK!!! If, like me, your truck is still being built...YOU HAVE NO WAY TO KNOW. The recall only addresses those trucks that are out. Stellantis CERTAINTLY is not going to reveal which trucks currently being built have this problem!!!

What can we do? You can pull the plug or you can wait until your truck is delivered and take it for a test drive, BEFORE SIGNING, and drive it to 100 MPH to see if it bounces off of a duct-tape speed limiter or continues to 105, 110, etc. Great way to break-in a brand new truck, huh? And...your dealership won't have a problem with that, will they? Haha! Are we having fun yet??

I don't know what do to. This is above my pay grade.

That is not a TSB, that is a safety recall. There’s nothing vague or inconclusive about it if you read it carefully. That recall is a global market recall, and only applies to a certain number of vehicles that are BUILT FOR EXPORT. Like mentioned a few posts back, export vehicles get tires that are only rated for 100 mph, so the engine calibration needs to reflect that for the speed limiter.

There are a multitude of engine calibrations for these 3.0 hurricane engines depending on which market they are built for, gears, 4x4 or 4x2, etc.

Most likely, this software flash that is being discussed in this thread could be incorrectly labeled and applied to 50 State market RHO’s.

These PCM flashes are normally only applied by the dealer under a warranty claim, and they can only be applied by them if the description of the TSB for the flash matches the symptoms of a customer concern (if they want to get paid by stellantis for applying the flash under a warranty claim).

The reality is, there is only one know case of this particular PCM flash being done (the OP of this thread), and it was purposely done using his own aftermarket witech account, and, apparently, without reading the description of what the flash addresses.

 

[Captain Howdy]

That is not a TSB, that is a safety recall. There’s nothing vague or inconclusive about it if you read it carefully. That recall is a global market recall, and only applies to a certain number of vehicles that are BUILT FOR EXPORT. Like mentioned a few posts back, export vehicles get tires that are only rated for 100 mph, so the engine calibration needs to reflect that for the speed limiter.

There are a multitude of engine calibrations for these 3.0 hurricane engines depending on which market they are built for, gears, 4x4 or 4x2, etc.

Most likely, this software flash that is being discussed in this thread could be incorrectly labeled and applied to 50 State market RHO’s.

These PCM flashes are normally only applied by the dealer under a warranty claim, and they can only be applied by them if the description of the TSB for the flash matches the symptoms of a customer concern (if they want to get paid by stellantis for applying the flash under a warranty claim).

The reality is, there is only one know case of this particular PCM flash being done (the OP of this thread), and it was purposely done using his own aftermarket witech account, and, apparently, without reading the description of what the flash addresses.

View attachment 8139

I see what you're saying. Thank you for illuminating.

I do not mean to incite anxiety in the forum, but this is the safe place to bring this kind of stuff to get perspective. You did that, thank you. As a consumer in the auto industry, you either advocate for yourself or you get what you get. Appreciate you guys on this forum very much.

 

[Jdmdc5teg06]

That is not a TSB, that is a safety recall. There’s nothing vague or inconclusive about it if you read it carefully. That recall is a global market recall, and only applies to a certain number of vehicles that are BUILT FOR EXPORT. Like mentioned a few posts back, export vehicles get tires that are only rated for 100 mph, so the engine calibration needs to reflect that for the speed limiter.

There are a multitude of engine calibrations for these 3.0 hurricane engines depending on which market they are built for, gears, 4x4 or 4x2, etc.

Most likely, this software flash that is being discussed in this thread could be incorrectly labeled and applied to 50 State market RHO’s.

These PCM flashes are normally only applied by the dealer under a warranty claim, and they can only be applied by them if the description of the TSB for the flash matches the symptoms of a customer concern (if they want to get paid by stellantis for applying the flash under a warranty claim).

The reality is, there is only one know case of this particular PCM flash being done (the OP of this thread), and it was purposely done using his own aftermarket witech account, and, apparently, without reading the description of what the flash addresses.

View attachment 8139

So basically, everyone who’s worried about their trucks getting an “update” either over the air OR when their truck is getting serviced shouldn’t worry about getting their trucks flashed to this new software and getting their trucks max at 98 mph.

Thank you for clarifying, Jimmy.

 

[JS59]

That is not a TSB, that is a safety recall. There’s nothing vague or inconclusive about it if you read it carefully. That recall is a global market recall, and only applies to a certain number of vehicles that are BUILT FOR EXPORT. Like mentioned a few posts back, export vehicles get tires that are only rated for 100 mph, so the engine calibration needs to reflect that for the speed limiter.

There are a multitude of engine calibrations for these 3.0 hurricane engines depending on which market they are built for, gears, 4x4 or 4x2, etc.

Most likely, this software flash that is being discussed in this thread could be incorrectly labeled and applied to 50 State market RHO’s.

These PCM flashes are normally only applied by the dealer under a warranty claim, and they can only be applied by them if the description of the TSB for the flash matches the symptoms of a customer concern (if they want to get paid by stellantis for applying the flash under a warranty claim).

The reality is, there is only one know case of this particular PCM flash being done (the OP of this thread), and it was purposely done using his own aftermarket witech account, and, apparently, without reading the description of what the flash addresses.

View attachment 8139

LOL - talk about getting worked up into a lather for nothing! This has been good TV though!

 

[RamFan]

I did say in one of my posts that I was sure this was for export use only, but it was fun while it lasted LOL

 

[Captain Howdy]

LOL - talk about getting worked up into a lather for nothing! This has been good TV though!

The lather was worse than message board drama. 9 months waiting for my factory order, down to a few weeks out and I was ready to bail out and get a leftover Durango Hellcat. Started setting up the deal. Glad it was a false alarm; I want the RHO.

Story of my life. Ready, fire, aim!

 

[itsmekylep]

I REALLY hate to stir the pot on this again, but I finally got my truck back after 30+ days at the dealer and on this morning on the way to work, 330 am, clear freeway, the truck would not go over 98 MPH. I'm almost certain the one time I got to drive it before all this it would go over 100.........

 

[Captain Howdy]

I REALLY hate to stir the pot on this again, but I finally got my truck back after 30+ days at the dealer and on this morning on the way to work, 330 am, clear freeway, the truck would not go over 98 MPH. I'm almost certain the one time I got to drive it before all this it would go over 100.........

Oh boy, here goes my Agent Orange acting up again.

Thank you for conveying that. You're not stirring the pot. You're communicating what's going on. Whether something or nothing, it's valuable information to other Stellantis customers. That's the power of a hobbyist forum. This is how we advocate for ourselves.

Anyone who accuses you of stirring the pot is too stupid to know if they're punched, slapped, stabbed or sexually violated. They deserve to be walked around by the nose by auto manufacturers.

I hope it's nothing. Please keep us updated.