sudden acceleration in reverse

10775 Views 32 Replies 17 Participants Last post by Qtown charger, Dec 20, 2021

Villa

Discussion Starter · Apr 11, 2019

I ignited my EV and set it in reverse mode. When I moved the foot from brake to gas pedal the EV suddendly started to accelerate full speed in reverse. I was throwed forward into the seat belt caused by heavy acceleration and was not able to reach the brake.
The car crashed with full throttle into a stone fence. Severe damage rear and car not drivable.
If anyone had been behind the car when it happened, they would be killed.
Cars picked up by towing truck/Jaguar assistance. No answers yet from Jaguar.

Anyone experienced any similar?

My EV has earlier had a lot of software problem/black & dead screens.
Beautiful car to drive and owe, but if dangerous and potential runaway car I am scared.

1 - 20 of 33 Posts

McRat

· #2 · Apr 11, 2019

Sudden unintended acceleration is extremely common in all cars, trucks, and motorcycles.
I was at the DMV when a driver taking their driving test drove through the wall, but missed everybody inside.

Do a search on SUA on Google.

Definitely check the floormat, these are common cause of SUA. Those new to the I-Pace should leave the car in CREEP ON mode, so you don't risk SUA.

Trivia - Cadillac has Reverse Automatic Braking, not just FAB.

Reactions: 1

Time2Roll

· #3 · Apr 12, 2019

No. No such action has been posted on this board.

LauderdaleFE

· #4 · Apr 12, 2019

McRat said:
Sudden unintended acceleration is extremely common in all cars, trucks, and motorcycles.
I was at the DMV when a driver taking their driving test drove through the wall, but missed everybody inside.

Do a search on SUA on Google.

Definitely check the floormat, these are common cause of SUA. Those new to the I-Pace should leave the car in CREEP ON mode, so you don't risk SUA.

Trivia - Cadillac has Reverse Automatic Braking, not just FAB.

I'm curious why creep on mode would reduce the SUA risks. Please expand on that a bit, if you would.

Villa

Discussion Starter · #5 · Apr 12, 2019

Creep mode was on

I have always had the I-pace in creep mode.
It was in creep mode before the incident. Interestingly when Jaguar logget the car after the crash, the creep mode was in "off" modus.
So the car must have turned the creep mode off as a part of the failure.

LauderdaleFE

· #6 · Apr 12, 2019

Apologies-- I should have expressed my sympathy for your situation before.

Terrible, and I hope you are ok after the crash. And I surely hope that was a black swan one in a million type event you and we will not experience with this vehicle.

Please come back with what the dealer finds was the cause.

McRat

· #7 · Apr 12, 2019

LauderdaleFE said:
I'm curious why creep on mode would reduce the SUA risks. Please expand on that a bit, if you would.

Ordinary drivers are used to putting a car in reverse, and letting the torque converter slowly roll the car back without pushing hard on the throttle, if at all.
In the I-Pace with CREEP OFF, you must apply some pressure to the throttle before it moves to unlock the parking brake. This can cause people to push too hard for reversing.

After reading this article I did some testing, and yeah, it will accelerate hard in R by flooring the gas (need to remind myself to find out the reverse speed limit). But not hard enough to keep your foot planted.

sflgator

· #8 · Apr 12, 2019 (Edited)

Villa said:
I ignited my EV and set it in reverse mode. When I moved the foot from brake to gas pedal the EV suddendly started to accelerate full speed in reverse. I was throwed forward into the seat belt caused by heavy acceleration and was not able to reach the brake.
The car crashed with full throttle into a stone fence. Severe damage rear and car not drivable.
If anyone had been behind the car when it happened, they would be killed.
Cars picked up by towing truck/Jaguar assistance. No answers yet from Jaguar.

Anyone experienced any similar?

My EV has earlier had a lot of software problem/black & dead screens.
Beautiful car to drive and owe, but if dangerous and potential runaway car I am scared.

Yes! That JUST HAPPENED TO ME YESTERDAY!!!! :surprise: Luckily, I was able to slam on the brake before hitting the curb and tree behind me. GEEZ!!! I'm calling my Jaguar Dealer right now. So sorry this happoened to you as well and you crashed. But luckily you're okay. The car can be fixed or replaced. BUT, for me, I'm fairly certain I have ALL the latest software updates as my I-Pace went recently into the updates although more for the Infotainment system.

Reactions: 1

sflgator

· #9 · Apr 12, 2019

McRat said:
Ordinary drivers are used to putting a car in reverse, and letting the torque converter slowly roll the car back without pushing hard on the throttle, if at all.
In the I-Pace with CREEP OFF, you must apply some pressure to the throttle before it moves to unlock the parking brake. This can cause people to push too hard for reversing.

After reading this article I did some testing, and yeah, it will accelerate hard in R by flooring the gas (need to remind myself to find out the reverse speed limit). But not hard enough to keep your foot planted.

When this same incident just happened to me in my I-Pace yesterday, I gently accelerated as usual in reverse and it suddenly took off in full or close to full power. I have Brake Regen on high with Creep mode OFF. And for those others wondering, my floor mat was not in the way; I actually have the regular floor mats + the all-weather floor mats BOTH snugly inserted with the 2 hooks. It was crazy and unlike the OP, I was lucky to catch it by slamming on my brake pedal. I just informed my dealer's SA. It's a very dangerous and potentially deadly problem! :surprise:

sciencegeek

· #10 · Apr 12, 2019

What mode were you guys in? Dynamic or Comfort?

Villa

Discussion Starter · #11 · Apr 12, 2019

It was in Comfort modus.

Villa

Discussion Starter · #12 · Apr 12, 2019

It was in comfort mode when it happened.

sflgator

· #13 · Apr 12, 2019 (Edited)

sciencegeek said:
What mode were you guys in? Dynamic or Comfort?

I don't remember. I start out in Comfort mode but usually switch to Dynamic when driving in the city.; not sure if I did yesterday afternoon or not. The driving logs (that the Jaguar Tech should be able to access) should tell us. Comfort mode for highway driving. But, the driving mode shouldn't matter. Bringing my car in on Monday to have them look at the logs to find out what happened and how they can fix it. Told them if they cannot figure it out, I will be selling the car or selling it back to Jaguar as it would be too dangerous to drive. For the OP, that could be a big lawsuit right there...but to be clear, I'm not suggesting anything.

sciencegeek

· #14 · Apr 12, 2019

Keep us posted guys. Important issue.

Reactions: 1

McRat

· #15 · Apr 12, 2019

I just went out and played with mine. Note it is 19A.x and 14.2, NC battery listed (don't think that's correct though).

When Creep is on, when you go from park to reverse, it requires the foot brake. But when you touch reverse, it lifts the parking brake. By releasing the brake, it will slowly accelerate to 3 mph on level ground or light grade without using the throttle. This is a safe speed to reverse at, a human walking speed.

When Creep is off, when you go from park to reverse, the P light goes out but the parking brake can still be on. It will hold on an uphill grade. It takes a push on the throttle to back up.

WARNING - For my test, my default user setting is CREEP OFF. When I park the car in CREEP ON, it will start up in Creep Off. Hill Hold in Creep On will wait a second or two, then start to climb in D. My other cars are not like that. Hill Hold stays until you press the throttle.

Recommendation: Pick One -

1) Have the Primary Driver settings saved at Creep On, Regen Low. The car will act like a rental car with an automatic. Set a Second User with Creep Off, Regen High, for personal use if desired.

2) Have all Users set at Creep On. I had mentioned this to two dealerships when setting up a car for test drives. It will be safer and more natural for new drivers.

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sflgator

· #16 · Apr 16, 2019

Villa said:
I ignited my EV and set it in reverse mode. When I moved the foot from brake to gas pedal the EV suddendly started to accelerate full speed in reverse. I was throwed forward into the seat belt caused by heavy acceleration and was not able to reach the brake.
The car crashed with full throttle into a stone fence. Severe damage rear and car not drivable.
If anyone had been behind the car when it happened, they would be killed.
Cars picked up by towing truck/Jaguar assistance. No answers yet from Jaguar.

Anyone experienced any similar?

My EV has earlier had a lot of software problem/black & dead screens.
Beautiful car to drive and owe, but if dangerous and potential runaway car I am scared.

Please see your Private Messages and please respond whenever possible. Thank you.

Villa

Discussion Starter · #17 · Apr 23, 2019

sciencegeek said:
What mode were you guys in? Dynamic or Comfort?

We drive always in comfort mode.

Mister Dave

· #18 · Apr 24, 2019

Villa said:
We drive always in comfort mode.

Did you find out why it happened yet?

djives

· #19 · Apr 24, 2019

I'm not buying it. Looks like the Tesla fanatics are spamming our boards again.

sflgator

· #20 · Apr 24, 2019 (Edited)

djives said:
I'm not buying it. Looks like the Tesla fanatics are spamming our boards again.

Nope. It happened. Waiting for JLR-NA and my dealership for answers. Nothing yet. It also happened to the OP in Oslo, Norway, and he crashed into a brick wall. I've seen the pictures. I think JLR should do a mandatory software update on ALL I-Paces everywhere...soon...before anyone else experiences this problem and someone gets hurt or killed!

Reactions: 1

1 - 20 of 33 Posts

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