Help with backing up from a sloped driveway

[HughJazzol]

Hello
I park my car on a slightly sloped driveway, and something happens daily that worries me.

When l leave daily, I:
1. Press brake.
2. Shift to R
3. Let go of the brake pedal
4. Press the gas pedal gently. In doing so, I hear and feel a loud thud. I feel that the car is holding itself in place, but when I press the gas pedal slightly, something gives and jolts to allow the car to roll backwards. Reverse brake assist is off, and this is with Engage and single-pedal modes.

How can I avoid that jolt? My only thought is to shift to neutral instead of R and letting the car roll backwards slowly.

Thanks

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[Mach-Lee]

The parking brake disengages. There may be louder clunk if the brake pads are sticking due to moisture. Could also be the park pawl disengaging under load.

When parking on a hill, you should set the parking brake before shifting into park. And release it with your foot on the brake before you move.

 

[HughJazzol]

The parking brake disengages. There may be louder clunk if the brake pads are sticking due to moisture. Could also be the park pawl disengaging under load.

When parking on a hill, you should set the parking brake before shifting into park. And release it with your foot on the brake before you move.

Could I manually release the parking brake before shifting to reverse when leaving? Only if I set it when parking as you suggested, no?

 

[Mach-Lee]

Could I manually release the parking brake before shifting to reverse when leaving? Only if I set it when parking as you suggested, no?

The idea here is to keep the weight of the car on the brake pads so the park pawl can release easily. That's why the parking brake should be applied first and released last. So you should release it after you are in gear with your foot on the brake.

 

[HughJazzol]

The idea here is to keep the weight of the car on the brake pads so the park pawl can release easily. That's why the parking brake should be applied first and released last. So you should release it after you are in gear with your foot on the brake.

Thanks again Lee
What's the pawl??
So my sequence should be:
PARKING
Pull up to driveway and set the parking brake. Doesn't this happen automatically??

LEAVING
Start car, obviously.
Press foot brake
Shift to R
Manually release the parking brake.
Press gas pedal to move backwards.

Did I get it right?

 

[Mach-Lee]

It doesn't happen automatically fast enough which is why you have your issue.

Parking:

• Pull up driveway in D
• Set parking brake
• Shift into Park

Leaving

• Press foot on brake and hold
• Shift into reverse
• Release parking brake
• Release foot from brake pedal
• Press pedal to move backwards

The parking pawl is a physical linkage in the final drive of the rear motor that prevents the rear axle from rotating when engaged. It is engaged and released by a solenoid. It is analogous to shifting to park in an ICE transmission. If you park on an incline, the weight and friction on the park pawl mechanism can make it difficult to disengage.

 

[Mme4me]

You can also try setting a second profile with single pedal mode off. Start car, hit this profile, back up then hit the profile with single pedal on.

 

[HughJazzol]

You can also try setting a second profile with single pedal mode off. Start car, hit this profile, back up then hit the profile with single pedal on.

This ia very sneaky and deceitful, but I like it.

 

[GreaseMonkey]

This ia very sneaky and deceitful, but I like it.

It won’t help you if you’re dealing with a pawl issue, but it would if it’s a moisture issue because the car in 2-pd mode would start moving more gradually / gently than you can in a 1-pd.

It would also help if you put your vehicle in neutral on an incline and press the brake pedal to dry the rotors before you park. I do this when I wash the car to ensure that excess moisture gets dealt with before parking for a period of time.

 

[ex2bot]

Mine does this a lot of the time when I back or drive out of the garage. I thought it was because of auto-hold.

 

[AliRafiee]

Speaking of steep driveways. I went to my friend’s house, parked at the top of the driveway. Came out to this. ?

Moved it so that the front tires were on the dry part, same results.

 

[67 Stang Convertible]

Speaking of steep driveways. I went to my friend’s house, parked at the top of the driveway. Came out to this. ?

Moved it so that the front tires were on the dry part, same results.

She is just telling you, "I don't like your friend and it's time to go" ? ? ?

 

[Misterrobot]

My wife’s 23 Escape sounds the same when releasing the automatic parking brakes

 

[RickMachE]

Speaking of steep driveways. I went to my friend’s house, parked at the top of the driveway. Came out to this. ?


Moved it so that the front tires were on the dry part, same results.

Not uncommon. Heavy vehicle, icy driveway. Many years ago, we awoke at a townhouse we were renting and found our car in the street. I suspected a theft attempt, when running out the door, and promptly fell on my ass. Everything was glaze ice, and the ice had built up under the tires and cause the vehicle to slide into the street.

Always set your parking brake. Always turn the wheel so you ideally are up against a curb. And, if you have any concerns, park on a flat road / driveway.

 

[ChehRob]

Another odd thing with steep driveways and 1Pedal is there is no 'coast'. Foot on the accelerator is needed to go forward or backward down a steep one.

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