Truck slides on slick surface

[nofreecell]

Yesterday I returned from the grocery store and parked my son’s truck in the usual spot and plugged it in. By the time I got back in front of the vehicle to get groceries out of the passenger side the truck began rolling back into the street. The charger pulled out of the port (connector is damaged and needs to be replaced). My son who is recovering from major surgery and limited on activity came into the garage and guided me to park again (we have had snow so wanted to make sure I was completely on a clear spot). I again put the truck in park, turned on the parking brake, vehicle was powered off. I walked around and got two bags of groceries with no problem, but when I went back to get the rest, as I was 1/2 way in the door bending to pick up stuff from the floor board, the truck again began to roll trapping me between the door and the vehicle. I was able to grab the overhead handle and step up on the running board as it rolled back into the street.
I had the dealership come and get the car. My son uses a different service department since the one at his dealership is inefficient, but that is further away. They may get to look at the truck by tomorrow. They don’t see any sensors off, but because I was honest, the sales manager said maybe it is my inexperience driving the vehicle or that it had a low tire pressure light last week, or the severe weather, all that sort of BS when a car guy talks to a woman. I grew up driving a split axle cattle truck so know how to drive and especially park.
Had I slipped (it was raining but hadn’t started to ice over yet) I would have been at least run over by the front wheel.
I am going to try and alert everyone because the service manager said he hadn’t seen any thing on any forum but I saw here that there have been recalls and some issue with wiring on the rear axle or something.
A vehicle in park with a parking brake activated should stay parked.
Regardless of the repair I am ordering an airline bumper or something like that and now refer to the vehicle as Christine (for you Steven King fans).

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[TMND]

Going electric on everything is stupid. A mechanical parking brake probably be a lot cheaper and ALWAYS reliable. Glad to hear you got out of it unscathed scary though.

 

[mr.Magoo]

The low tire pressure is definitely it !

You actively have to push a button to stop the truck from putting the truck into park as you open the doors. P-Brake or no P-brake, that should be sufficient to hold the truck unless you're parking on a steep incline/declilne, in which case the truck will automatically engage the parking brake (at least mine does, and no, it is not auto hold as I have that disabled).

So, really, under normal circumstances this should be pretty much impossible, so something is definitely going on.

 

[TMND]

Your garage isn’t over an Indian burial ground is it?

 

[nofreecell]

The low tire pressure is definitely it !

You actively have to push a button to stop the truck from putting the truck into park as you open the doors. P-Brake or no P-brake, that should be sufficient to hold the truck unless you're parking on a steep incline/declilne, in which case the truck will automatically engage the parking brake (at least mine does, and no, it is not auto hold as I have that disabled).

So, really, under normal circumstances this should be pretty much impossible, so something is definitely going on.

I definitely engaged the parking brake and saw the brake on displayed as I do every time I park this and any vehicle. It is a habit.

 

[TMND]

I live in flat country, so rarely even think about it, but it is pull to engage not push, isn’t it?

 

[nofreecell]

Your garage isn’t over an Indian burial ground is it?

No, in fact his garage is so small I have difficulty getting my Forester in it.

 

[nofreecell]

I live in flat country, so rarely even think about it, but it is pull to engage not push, isn’t it?

Yes, I am dyslexic so always go by the display

 

[Runaway Tractor]

The parking brake is completely irrelevant. The truck has a park gear just like any other vehicle. It is not possible for the truck to roll away when in park. The rear axle is locked in place. Are you SURE you put it in park?

 

[nofreecell]

The parking brake is completely irrelevant. The truck has a park gear just like any other vehicle. It is not possible for the truck to roll away when in park. The rear axle is locked in place. Are you SURE you put it in park?

Yup, both times. If it hadn’t been in Park it would not have stayed in place at all.

 

[TaxmanHog]

Looking forward to reports from the shop about this situation.

 

[TaxmanHog]

We had a couple of reports a year or so ago, of a truck parked on a icy/snow covered inclined driveway, one was clearly loss of surface traction on the rear axle wheels, they remained motionless as the TRUCK slides backward on the driveway.

 

[Maquis]

Are you SURE you put it in park?

Unnecessary. Simply opening the door or shutting the truck off puts it in park automatically.

I would have to look in the shop manual to see if the transmission park mechanism and parking brake are somehow interconnected. It’s almost inconceivable that both could fail unless they share a common mechanism.

 

[nofreecell]

We had a couple of reports a year or so ago, of a truck parked on a icy/snow covered inclined driveway, one was clearly loss of surface traction on the rear axle wheels, they remained motionless as the TRUCK slides backward on the driveway.

This would be great information for people living in these climates. Since in our case, the truck rolled back into the street in the direction that it came from vs sliding straight across to the neighbors driveway where they part their car at the very edge of the street . During the second episode when I was in half in the cab on the shotgun side, I felt it rolling. As we know from watching all the CSI shows eye witness recall is flawed, but traumatic memory gets embedded .

 

[TaxmanHog]

I know that you can open the door while in drive with driver seat belt fastened.

If the truck is in Drive, belt is fastened, open the drivers door, parking brake automatically sets, unfasten the belt, selector goes into Park.

If the truck is in neutral, belt fastened, open drivers door, parking brake did not automatically set, unfasten the belt, the selector goes into Park.

If the truck is in reverse, belt fastened, open drivers door, parking brake sets, unfasten belt and the selector moves to park.

Now if the seat belt is unfastened prior to opening the door, the parking brake sets and selector goes into park immediately.

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