2012 Genesis 4.6L Slow Shifting Times

[nrlebourdais]

Hey everyone,

Recently bought a 2012 genesis 4.6L, and I have been overwhelmingly happy with the car, but there is one issue I have noticed. The transmission shifts exceptionally slow. I can understand why it would shift slow in regular drive mode, but even when in sport mode, when I tap to either up-shift or downshift, it takes upwards of 1.5 seconds to actually shift. Because of this reason I almost never use sport mode. Even in drive, if I full press the throttle, it takes about 1.5 seconds before it registers that I've put the pedal down and actually shifts. Is this a fault of my transmission or is there something I'm missing? Is it possible I need some sort of software update for my transmission? Any feedback would be greatly appreciated.

Thanks,

Nick

 

[AgentSmith007]

Hey everyone,

Recently bought a 2012 genesis 4.6L, and I have been overwhelmingly happy with the car, but there is one issue I have noticed. The transmission shifts exceptionally slow. I can understand why it would shift slow in regular drive mode, but even when in sport mode, when I tap to either up-shift or downshift, it takes upwards of 1.5 seconds to actually shift. Because of this reason I almost never use sport mode. Even in drive, if I full press the throttle, it takes about 1.5 seconds before it registers that I've put the pedal down and actually shifts. Is this a fault of my transmission or is there something I'm missing? Is it possible I need some sort of software update for my transmission? Any feedback would be greatly appreciated.

Thanks,

Nick

Hi Nick,

Welcome to the forum.

1. You may have actual issue with your transmission
or
2. It is the normal behavior of the "nanny" (ECM -Electronic Control Module) that controls your 8-speed transmission shifting.

I have 2011 Genesis 4.6 and ZF 6-speed transmission and also was not happy with the down-shifting. I fixed the problem by installing Sprint Booster.

I am sure other folks with 8-speed transmission will chime in.

 

[nrlebourdais]

Hi Nick,

Welcome to the forum.

1. You may have actual issue with your transmission
or
2. It is the normal behavior of the "nanny" (ECM -Electronic Control Module) that controls your 8-speed transmission shifting.

I have 2011 Genesis 4.6 and ZF 6-speed transmission and also was not happy with the down-shifting. I fixed the problem by installing Spring Booster.

I am sure other folks with 8-speed transmission will chime in.

I assume you meant a sprint booster and not spring booster, but unfortunately either way this would not fix my issue. The issue I'm facing is that the transmission has a very long lag when it shifts between gears, not throttle response.

 

[AgentSmith007]

I assume you meant a sprint booster and not spring booster,

Yes, I meant Sprint Booster. I corrected that.

but unfortunately either way this would not fix my issue. The issue I'm facing is that the transmission has a very long lag when it shifts between gears, not throttle response.

In this case you need to go to the dealership to diagnose the problem.

 

[Gunkk]

...or a good transmission shop that can do the Hyundai 8 speed trans.

 

[nrlebourdais]

...or a good transmission shop that can do the Hyundai 8 speed trans.

Yes, I meant Sprint Booster. I corrected that.


In this case you need to go to the dealership to diagnose the problem.

I don't understand. If you don't have the 8 speed auto transmission that came in my car, then why did you recommend me a solution that you had to a completely different issue for a different transmission? And then your advice to me is to go to the dealership? If you have no idea the answer to my question I would rather you just tell me.

 

[Gunkk]

Pretty sure that wasn't aimed at me...

My car shifts in about 3/4 sec, so yeah 1.5 seems high for a 2012 4.6. Absent going to a professional with a GDS that can talk to the TCM, your options are limited. You might be able to check & adjust the fluid level on your own (assuming that's a possible culprit):

Hyundai 8-Speed ATF Procedure

This bulletin provides information regarding servicing the fluid level on Hyundai 8-speed automatic transmissions. Applicable vehicles include 2012-2016 Genesis Sedan and Equus...

www.autoserviceprofessional.com

 

[nrlebourdais]

Pretty sure that wasn't aimed at me...

My car shifts in about 3/4 sec, so yeah 1.5 seems high for a 2012 4.6. Absent going to a professional with a GDS that can talk to the TCM, your options are limited. You might be able to check & adjust the fluid level on your own (assuming that's a possible culprit):

Hyundai 8-Speed ATF Procedure

This bulletin provides information regarding servicing the fluid level on Hyundai 8-speed automatic transmissions. Applicable vehicles include 2012-2016 Genesis Sedan and Equus...

www.autoserviceprofessional.com

Apologies, I meant to reply to the other guy that suggested something about a tuner for his 6 speed.

 

[nrlebourdais]

Yes, I meant Sprint Booster. I corrected that.


In this case you need to go to the dealership to diagnose the problem.

I don't understand. If you don't have the 8 speed auto transmission that came in my car, then why did you recommend me a solution that you had to a completely different issue for a different transmission? And then your advice to me is to go to the dealership? If you have no idea the answer to my question I would rather you just tell me

 

[Gunkk]

No worries. Check your PMs.

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[AgentSmith007]

I don't understand. If you don't have the 8 speed auto transmission that came in my car, then why did you recommend me a solution that you had to a completely different issue for a different transmission? And then your advice to me is to go to the dealership? If you have no idea the answer to my question I would rather you just tell me

I am very sorry I hurt your feelings.