# 09 Accord Not Shifting Correctly

**URL:** <https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182>\
**Category:** Maintenance/Repairs\
**Tags:** transmissions, accord, honda\
**Created:** [December 23, 2009, 2:23pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182 "2009-12-23T14:23:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![pem5t1](https://avatars.discourse-cdn.com/v4/letter/p/76d3ee/32.png) [@pem5t1](https://community.cartalk.com/u/pem5t1)\
**Post date:** [December 23, 2009, 2:23pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182/1 "2009-12-23T14:23:33Z")

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My new 09 Accord does not want to shift from third to fourth gears, when accelerating by simple gravity, going down hill. I have to touch the gas pedal before the transmission will shift. I took it to the dealer, and was told that was “normal” and a feature of the car. Is this true?

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**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\
**Post date:** [December 23, 2009, 2:29pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182/2 "2009-12-23T14:29:39Z")

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I believe this is a feature of the “Grade Logic” programming in Honda automatic transmissions. The Owner’s Manual should explain it further.

[http://automobiles.honda.com/2009/accord-coupe/features.aspx?Feature=glc](http://automobiles.honda.com/2009/accord-coupe/features.aspx?Feature=glc)

Ed B.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/48514_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [December 23, 2009, 2:37pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182/3 "2009-12-23T14:37:53Z")

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Most car manufacturers have adopted “fuzzy logic” in the programming of their transmission modules, and as a result, modern transmissions will tend to “hold” in 3rd gear on a downgrade unless you hit the accelerator. This is a good thing. Why would you want it to go into 4th gear, thus necessitating more use of your brakes?

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [December 23, 2009, 3:05pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182/4 "2009-12-23T15:05:04Z")

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It is Grade Logic Control and it IS completely normal. Grade logic uses ascending and descending control. In the descending control like what you are feeling grade logic extends out the 3-4 shift to utilize engine braking. Its all to help keep the vehicle under control while descending hills.

transman

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**Author:** ![pem5t1](https://avatars.discourse-cdn.com/v4/letter/p/76d3ee/32.png) [@pem5t1](https://community.cartalk.com/u/pem5t1)\
**Post date:** [December 23, 2009, 3:23pm UTC](https://community.cartalk.com/t/09-accord-not-shifting-correctly/41182/5 "2009-12-23T15:23:04Z")

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Thanks for the confirmation. I can see where it would be useful at times, but normally it’s just annoying, because typically when it happens, I really will be speeding up soon, so I do want it to shift up. Guess I’ll just tap the gas and count my blessings that I have a new car.