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The Problem: New Ascent (about 50 miles on it) I tried to open the tailgate from driver seat. The car's new and I'm just learning so I fumbled with the button pressing and releasing twice in rapid succession. Tailgate made clunk sound and then got a high-pitched beep that would not stop. Tailgate appeared in closed position. No idiot lights or messages on console. Could not open the tailgate manually or with key fob. Beep would not stop. Car seemed to be OK otherwise. It would start, drive, park, and lock and unlock OK. Tailgate kaput.

The Solution: I disconnected both battery leads and touched the leads together for several seconds. When the leads were disconnected the beep (of course) stopped. After touching leads together I reconnected them to the battery and the beep did not return. At this point the tailgate worked fine and all is sweetness and light.

The Explanation: So the service manager explained that the tailgates are finicky beasties and have special logic in them that tries to prevent motor burn out should the gate be opening and closing at the same time (double button push?). Once the gate gets into a "safety mode" it will not open or close and just sits there like a lox complaining with a beep sound. Doing the battery dance resets things sort of like CTRL-ALT-Delete for the car.

Subaru: It sure would be nice to have (a) An indicator showing that the tailgate is in this mode and (b) A way to reset that does not require a metric socket set and some mechanical aptitude.... just say'n....
 

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...It sure would be nice to have (a) An indicator showing that the tailgate is in this mode and (b) A way to reset that does not require a metric socket set and some mechanical aptitude.... just say'n....
i like to know if we can pull #XX fuse to reset the lift gate(ONLY) instead of disconnecting battery?

https://www.ascentforums.com/forum/...blems/3813-power-lift-gate-jammed-shut-2.html
I'm trying to find that info for you all, but I still haven't gotten the electrical portion of the service manual, and, none of the fuse markings in the manual show which it is.
 

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Someone else from that thread posted above, mentioned this:


I also ran into this problem the other night. Got home, parked, tried the power gate by the dash button as normal. Just a constant beep and it won't open. Tried the button on the fob - same thing. Tried locking the car, unlocking the car, etc. Before resetting the battery or (ugh) calling the dealership, I read through the manual.

Found the instructions on page 157 - Initialization of power rear gate. You have to keep holding the rear gate button for at least ten seconds and you'll hear it unlock. Hope this helps someone out

Does that not work in all cases?
 

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Tailgate would not open, had to get in car, remove the cover on the tailgate and use a flathead screwdriver to open. Opened and shut it again, the auto door won't work at all......
 

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Tailgate would not open, had to get in car, remove the cover on the tailgate and use a flathead screwdriver to open. Opened and shut it again, the auto door won't work at all......
Try this:

page 157 - Initialization of power rear gate. Keep holding the rear gate button for at least ten seconds.
That will hopefully reset it.
 

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Dealer fixed it today. Service manager is going to try to get me a new battery for my car. He also said that there will be a software update in the future for tailgate issues.
 

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The Problem: New Ascent (about 50 miles on it) I tried to open the tailgate from driver seat. The car's new and I'm just learning so I fumbled with the button pressing and releasing twice in rapid succession. Tailgate made clunk sound and then got a high-pitched beep that would not stop. Tailgate appeared in closed position. No idiot lights or messages on console. Could not open the tailgate manually or with key fob. Beep would not stop. Car seemed to be OK otherwise. It would start, drive, park, and lock and unlock OK. Tailgate kaput.

The Solution: I disconnected both battery leads and touched the leads together for several seconds. When the leads were disconnected the beep (of course) stopped. After touching leads together I reconnected them to the battery and the beep did not return. At this point the tailgate worked fine and all is sweetness and light.

The Explanation: So the service manager explained that the tailgates are finicky beasties and have special logic in them that tries to prevent motor burn out should the gate be opening and closing at the same time (double button push?). Once the gate gets into a "safety mode" it will not open or close and just sits there like a lox complaining with a beep sound. Doing the battery dance resets things sort of like CTRL-ALT-Delete for the car.

Subaru: It sure would be nice to have (a) An indicator showing that the tailgate is in this mode and (b) A way to reset that does not require a metric socket set and some mechanical aptitude.... just say'n....

Removing the negative terminal only worked for me (10mm socket wrench). That would save a few seconds vs removing both leads.


I got the idea from the instructions for installing the fog light kit. That was the first step they had me do, and I remembered it.
 
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That will hopefully reset it.
Forester rear gate is subject to the same as the Ascent. Nothing I can find in the manual that says what the Ascent manual does.

I happen to have a socket screwdriver set, so it literally was a two minute fix for me when the wife's Fozzie did this. Open hood, unscrew both terminals, touch them together, reinstall, fixed. (We also have to do this with the ones on the sales floor when the battery runs down.)
 

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Hey guys, I was trying to come up with a way to keep the hatch from killing the battery while open. Tried a few different things, caused a few different problems, but finally may have worked it out.

At one point I had the hatch to where it wouldn't open or close and simply beeped. I really didn't want to mess with the battery cables so I was excited to find the info about the fuses under the dash (thanks @mr.paul). Turns out it's Fuse #14. That one did the trick. Pull it out, wait a few seconds, put it back in.

I also shot some videos of my findings if you're interested.

How to get the computer to sleep while hatch is open:

How to get the hatch unstuck if you screw it up:
 

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I just called SOA to follow up on my complaint. She said that the complaints go to the product development team...end of story.
Also spoke to my service manager to see what the status is on the software update. There is no update at the time. Maybe never.
I learned that the instrument panel cluster pulls energy from the battery in addition to the open tailgate.
I tried to get more information from him, but he was pretty tight lipped.
 

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2019 Subaru Ascent Touring (Canadian Edition) -- Ice Silver Metallic
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I haven't had this happen before, but I think the manual somewhere states to hold the driver side hatch release button 10 or more seconds to reset the lock/latch?



The Problem: New Ascent (about 50 miles on it) I tried to open the tailgate from driver seat. The car's new and I'm just learning so I fumbled with the button pressing and releasing twice in rapid succession. Tailgate made clunk sound and then got a high-pitched beep that would not stop. Tailgate appeared in closed position. No idiot lights or messages on console. Could not open the tailgate manually or with key fob. Beep would not stop. Car seemed to be OK otherwise. It would start, drive, park, and lock and unlock OK. Tailgate kaput.

The Solution: I disconnected both battery leads and touched the leads together for several seconds. When the leads were disconnected the beep (of course) stopped. After touching leads together I reconnected them to the battery and the beep did not return. At this point the tailgate worked fine and all is sweetness and light.

The Explanation: So the service manager explained that the tailgates are finicky beasties and have special logic in them that tries to prevent motor burn out should the gate be opening and closing at the same time (double button push?). Once the gate gets into a "safety mode" it will not open or close and just sits there like a lox complaining with a beep sound. Doing the battery dance resets things sort of like CTRL-ALT-Delete for the car.

Subaru: It sure would be nice to have (a) An indicator showing that the tailgate is in this mode and (b) A way to reset that does not require a metric socket set and some mechanical aptitude.... just say'n....
 

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If anyone has battery problems, or any for that matter, it would be good for us if you could let Subaru know. Send an email and be as specific as possible regarding length of time you left the tailgate open. Send your email to: Jeff Walters, Senior VP of Sales (also responsible for Field Services): [email protected] Be sure to include your VIN number.
Join the Subaru Ascent Dead Battery Club on FB.
 

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Standby, These solutions may not be completely valid. Testing still underway.
What's the latest on your testing? Someone suggested I try finding an auto electrician to make an internal switch that kills Fuse #14. Do you think that will work?
 

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My 2019 Ascent is only a month old and we had this happen today. I disconnected the battery before reading this to stop the high pitch sounds and rest the tailgate. Good to know for next time. Thanks everyone for the tips.
 

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My 2-month old 2019 Ascent with 3300 miles just did this. The rear gate won't open and the constant high-pitched ringing noise is killing me! I tried to pull Fuse 14 (from a video someone else posted) but it did not work. How do you disconnect the battery? Is there a video I can watch? I know nothing about car engines.

UPDATE: My husband came home and showed me how to disconnect the battery.
 

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So the tailgate getting stuck shut with the annoying warning tone, happened to me this weekend. I had to drive 30 min home with the bloody thing blaring.

I ended up disconnecting on terminal of the battery and that reset it properly. But this is a major PITA. I really don't want to have to carry a socket wrench with me.

Can anyone confirm that pressing the hatch button on the lower dash panel for 10 seconds, indeed works to reset the system?
 
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