Tailgate Mystery NEED YOU PEEPS SOLVED (Latch Issue)

2085 Views 26 Replies 5 Participants Last post by OddyPapa, 6 mo ago

OddyPapa

Discussion Starter · 6 mo ago

Good afternoon,

I am having a bizarre issue with my tailgate.

1. It will not open automatically AT ALL unless:
2. It will only open automatically ONCE AND ONLY ONCE if the battery is disconnected and reconnected. At which point it will go back to problem #1.
3. The tailgate close door button (on bottom of tailgate) has power and lights up but won’t close the tailgate.
4. The front drivers side button to operate the tailgate will neither open nor close the tailgate regardless of a battery disconnect.

The handle and key fob both work to open it automatically the one time after a battery disconnect.

Any ideas?

Vehicle: 2017 Honda Odyssey EXL W/RES

I have begun to search through the 28 pages on the 4th Gen forum section with the word “tailgate” but still can’t find a solution.

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phattyduck

· #2 · 6 mo ago

Likely a problem with the latch mechanism - there are multiple position switches, actuator, etc. in there.

To confirm - Can you open the door 'manually' by pressing and holding the button on the hatch and opening it that way, or is the only way you can open it to disconnect the battery? There is also an 'emergency' release that you can access by popping a plastic door near the latch mechanism and moving a lever.

I would start with the test procedures in the service manual focused on testing the latch mechanism.

-Charlie

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phattyduck

· #5 · 6 mo ago

OddyPapa said:
The latch works manually and the emergency latch works just fine as well. I have even tried operating the motor via HDS and still nothing. I am confused why it works after a battery disconnect and why only once. Attached are HDS shots.

Look at those errors... It won't power open because it doesn't think the door is closed (well, fully latched).

Fix/clean/replace the latch mechanism...

-Charlie

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phattyduck

· #12 · 6 mo ago

OddyPapa said:
I will charge the battery tonight and see if there is a change. I

I will say that if you are doing any of the scans with in the Key-on, engine-off position, (two single presses of the start button with foot off brake) make sure that you have the charger on the battery while you are doing it. Lots of crazy stuff happens if you don't. (may be ok with a full and new battery, but any age on it and things go bad quick - even if the battery is perfectly fine)

-Charlie

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phattyduck

· #26 · 6 mo ago

OddyPapa said:
One final question: how did this happen?

No way to know - you seem to be the first person reporting this.

-Charlie

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