New Hyundai recall #201 (ABS)

[joegr]

Well, I would bet that the fuses does cut power to the brake module because the official solution by Hyundai is to use a lower rated fuse to cut power to the module in advent of a failure to prevent it from drawing excessive amps and causing a fire risk.

Yeah, but only when it blows due to a short that has already happened.

 

[carguy75]

Without a schematic we are all really just guessing. 40 amps is a ton of current to put in an electronic module. If the issue is corrosion within the control circuitry it's probably shorting traces on the printed wire board which may be energizing a high current relay external to the module (maybe in the drive unit itself), without any control or safety limits. So, pulling the fuse may not even be de-energizing the module.

Well, I would bet that the fuses does cut power to the brake module because the official solution by Hyundai is to use a lower rated fuse to cut power to the module in advent of a failure to prevent it from drawing excessive amps and causing a fire risk.

 

[carguy75]

Yeah, but only when it blows due to a short that has already happened.

What???

Fuses are usually part of a circuit that powers a module and cut power by opening the circuit when it exceeds the current limit for whatever reason. The brake module does not work without it fuses due to being an incomplete circuit, hence why Hyundai is using a replacement fuse to prevent an fire issue since the fuse will break the circuit and stop the current flow to the faulty unit before it gets too hot.

I assume Hyundai will be using 25A delayed fuses if the system operates in that range normally if the 40A delay fuses allows too much current flow before failing.

Do not over think the design of the brake module. Removing the fuses does disable the brake module and will trigger a trouble light in the cluster. The brakes will be set to emergency backup mode without the ABS and other special functions.

 

[JeffSea40]

Not trying to be a smart ass here ...

How do we know what the Hyundai fix will entail? That is, are different fuses part of the fix?

 

[HawaiiPD]

I went to my local Genesis dealer to do the ABS recall and they said the factory has NO solution to the problem and can't do anything. They said
this same ABS recall also occurred in the Hyundai Tucson last year and they fixed a bunch of them.
I also have a 2018 Kia Stinger with the same ABS recall, Kia also said NO solution yet. So I have two cars with the recall no fixes.

 

[daviderle]

 

[carguy75]

Not trying to be a smart ass here ...

How do we know what the Hyundai fix will entail? That is, are different fuses part of the fix?

Page 3 will explain the solution.

https://static.nhtsa.gov/odi/rcl/2021/RCLRPT-21V160-1906.PDF

 

[surprisinguy]

Just a few lights

What app are you running on the screen there?

 

[JeffSea40]

Page 3 will explain the solution.

https://static.nhtsa.gov/odi/rcl/2021/RCLRPT-21V160-1906.PDF

Thanks

 

[Suburbazine]

What app are you running on the screen there?

Torque Pro with OBD2AA

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[carguy75]

Torque Pro with OBD2AA

The Torque Pro app is very useful for diagnostic data and performance data.

It do not perform special functions like my pro level scan tools, but it does provide a good read out of the engine parameters and accurate trouble code reading.

The app's GPS acceleration accuracy is limited to the quality of hardware used, but work pretty well to give a good feel for the car performance level without needing to go to drag strip.

 

[pmckechnie]

You Know, The problem may be that the 40A fuse may be the wrong fuse and should be 25A.
A lot happens between the engineers and the customers.

 

[carguy75]

You Know, The problem may be that the 40A fuse may be the wrong fuse and should be 25A.
A lot happens between the engineers and the customers.

You may be correct.

I read that other 2015-2019 Hyundai models received the 25A fuses as a fix for the same ABS issue with the 40A fuses and that some 2020 models already got the 25A fuses installed at the factory.

It not official for the Genesis yet, but I bet that it will be a set of 25A fuses as well. The ABS system probably does work fine with 25A delay fuses.

Here is the Hyundai Tuscan ABS fire recall information that explains the 25A fuse fix.

https://static.nhtsa.gov/odi/rcl/2020/RCLRPT-20V543-3047.PDF

 

[EdP]

You may be correct.

I read that other 2015-2019 Hyundai models received the 25A fuses as a fix for the same ABS issue with the 40A fuses and that some 2020 models already got the 25A fuses installed at the factory.

It not official for the Genesis yet, but I bet that it will be a set of 25A fuses as well. The ABS system probably does work fine with 25A delay fuses.

Here is the Hyundai Tuscan ABS fire recall information that explains the 25A fuse fix.

https://static.nhtsa.gov/odi/rcl/2020/RCLRPT-20V543-3047.PDF

It states:
How Remedy Component Differs
from Recalled Component :
The new fuse is rated at a lower amperage to effectively limit the operating
current of the ABS module.

So they are saying the module can still fk up but the lower fuse will keep it from doing serious damage.

 

[daviderle]

I got the 5.0 greyhound serviced today and spoke to senior guy there (and this guy knows his stuff), nothing official so take the following with a grain of salt:
1 - Indeed, the fuse will be replaced.
2 - There will also be full inspection of hydraulic component of the ABS module, if there are any evidence of corrosion or cracked seals the entire module will be replaced as part of the process.

 

[EdP]

I got the 5.0 greyhound serviced today and spoke to senior guy there (and this guy knows his stuff), nothing official so take the following with a grain of salt:
1 - Indeed, the fuse will be replaced.
2 - There will also be full inspection of hydraulic component of the ABS module, if there are any evidence of corrosion or cracked seals the entire module will be replaced as part of the process.

OK, that makes some sense. Some indication was just changing fuses but this goes the extra steps to find a possible problem.

 

[carguy75]

It states:
How Remedy Component Differs
from Recalled Component :
The new fuse is rated at a lower amperage to effectively limit the operating
current of the ABS module.

So they are saying the module can still fk up but the lower fuse will keep it from doing serious damage.

Hit it on the nail. The ABS module is still defective on some cars, however the new fuses just prevent a fire from occuring when the ABS module fail.

 

[carguy75]

I got the 5.0 greyhound serviced today and spoke to senior guy there (and this guy knows his stuff), nothing official so take the following with a grain of salt:
1 - Indeed, the fuse will be replaced.
2 - There will also be full inspection of hydraulic component of the ABS module, if there are any evidence of corrosion or cracked seals the entire module will be replaced as part of the process.

Now, that sounds like a proper recall if the information is correct.

 

[daviderle]

Now, that sounds like a proper recall if the information is correct.

Indeed, now many of us know about how Wonderful the Hyundai dealership experience can be, so IMHO making sure this is done by a competent dealer would be the key on this one, when it’s time to remedy the issue.

I am blessed with the option of 4 much closer Hyundai/Genesis service departments , however, a 90 miles round trip will still be worth the extra effort to get this one done right.
Without mentioning names, I am pretty sure anyone that lives around ATL knows exactly which dealer I am talking about....

 

[carguy75]

Indeed, now many of us know about how Wonderful the Hyundai dealership experience can be, so IMHO making sure this is done by a competent dealer would be the key on this one, when it’s time to remedy the issue.

I am blessed with the option of 4 much closer Hyundai/Genesis service departments , however, a 90 miles round trip will still be worth the extra effort to get this one done right.
Without mentioning names, I am pretty sure anyone that lives around ATL knows exactly which dealer I am talking about....

Man, I never had to take my Genesis to a dealer for any work so far. The ABS recall will be my first time letting a dealership touch my car.

However, I am starting to think that my Genesis ABS module will not have any corrosion due to the lack of rust on my ride. Georgia based cars usually do not rust as quickly like cars driven upstate. Therefore, the ABS corrosion issue may not be an problem for my ride as of yet, but I will swap out the 40A fuses for whatever the new fuses may be.