2024 Honda Ridgeline Transmission problem

[millerbl00]

I have a 2024 Honda Ridgeline with 28000 miles on it. Started having VERY VERY rough shifting shortly after the battery was replaced. About 800 miles later.
I did a 3 drain and fill and now its ok. Magnet was clean.

Think the battery replacement did it or the fluid just needs to be replaced Yearly??

 

[martinq]

Interesting. I think it was just re-learning the shift values but I would look for TSBs for battery replacement and transmission issues.

 

[millerbl00]

One more thing on the bad shifting. It was doing it between 40 and 50 mph just dropping in and out of gear harshly. Put it in sport mode and it stopped until I took it out of sport mode.

 

[martinq]

By magnet are you referring to the drain plug or the transmission pan?

 

[millerbl00]

drain plug

 

[mark pruett]

One more thing on the bad shifting. It was doing it between 40 and 50 mph just dropping in and out of gear harshly. Put it in sport mode and it stopped until I took it out of sport mode.

Is this the paddle shifting stuff? If so, it probably stayed put because from what I understand, it only shifts for you if you're on the edges of the shift range, but "D" will sometimes hunt around for the most efficient gear.

I bet it's just the software re-learning the points and everything else. Even my 05 Dodge would run and shift like crap for a couple hundred miles until it figured it all out after a battery change.

Dealers do recommend a fluid change around 30k, but I'm not sure where that is in relation to the maintenance minder recommendation, other than 30k is the mountains/towing interval independent of the MM.

 

[Zee09]

Time to flip

 

[millerbl00]

No, it was doing it in auto mode.
Putting in sport mode stopped it.

After 800 miles you think it relearned. I did a triple drain fill with lubeguard and its ok now.

I have a 120000 mile warranty so not concerned.

 

[ctechbob]

Very possible it just needed to relearn the adaptive tables.

If someone had access to a FSM they might be able to tell you what the procedure is for doing an actual relearn. It is usually a very specific set of exercises to go through so that everything learns as quickly as possible. Or you can just wait it out and it will eventually learn all it needs to.

As an example, here's what you're supposed to do with a 10R80 after the adaptive tables are reset:

"Perform the adaptive learning drive cycle on a level road surface as follows:

1. Record, and then clear any DTC’s
2. Drive the vehicle until the engine and transmission reach normal operating temperature.
3. Accelerate from a stop with light throttle (15%), ensuring that upshifts 1st through 8th occur at engine speeds between 1300-1600 rpm.
4. Continue to accelerate (may apply slightly more throttle after 7-8 upshift at 32-38 mph (51-61 km/h) until you achieve 55 mph (88 km/h) and the 8-9 and 9-10 shifts complete.
5. Brake very gently to a complete stop and hold the foot brake for five (5) seconds.
6. Shift the transmission to Neutral. Wait 1 second.
7. Shift the transmission to Reverse. Wait 2 seconds.
8. Shift the transmission to Neutral. Wait 1 second.
9. Shift the transmission to Drive. Wait 2 seconds.
10. Repeat Steps 3 through 9 six (6) additional times.

After the final step, place the vehicle in park and cycle the ignition key off. Wait 3-5 minutes before driving."


It's just the world we live in these days with everything being super complicated.

 

[Marcozi]

It's under warranty. Take it back to the dealer.

 

[millerbl00]

Dealer said nothing they can do until it throws a code. No code all they can do is do a 3 drain and fill for $600.
I did that for under $200. Shifting good now.

 

[Danh]

The transmission reset for my Acura goes like this:

Turn the ignition on without starting the engine (i.e. don’t depress brake pedal)
Within 5 seconds of turning the ignition on depress accelerator to the floor for 15-30 seconds
During this time the CEL should go off
Restart engine

Don’t know if this will help but doesn’t seem like it could hurt.

 

[50yr Street Mech]

Gee, something different. A Honda with transmission troubles. Honda USE to have indestructible transmissions back in the day.

 

[supton]

Gee, something different. A Honda with transmission troubles. Honda USE to have indestructible transmissions back in the day.

Unless if I'm mistake (and the web too) this is a ZF 9 speed. I think this transmission had some woes early on, that then just became programing problems for certain OEM's--this is a transmission used in many applications, not just at Honda.

 

[millerbl00]

Yes a ZF 9 speed. At this point I think the fluid just degraded and the trans having to relearn after the battery replacement didn't help

 

[50yr Street Mech]

Things have gotten too complicated with these new fangled tranny's. Replace a battery, and the tranny has to re-learn how to work properly. Ridiculous.

 

[millerbl00]

Been that way a long time....

 

[supton]

Things have gotten too complicated with these new fangled tranny's. Replace a battery, and the tranny has to re-learn how to work properly. Ridiculous.

No disagreement. Saving to memory at power down should be used, not storing variables in volatile memory only.

I get it, EEPROM's wear out, but still. Seems like something they could handle better.

 

[50yr Street Mech]

Get a manual transmission. Problem solved.

 

[millerbl00]

Not many manual Transmissions left..
Not a big deal...