Park button vs. Parking brake

I always set my parking brake and the button, as well as try to curb the wheels in the appropriate direction as needed.

 

no, it isn't prius specific. but all auto manuals will tel you to set the parking brake for safety.

i never use it unless the slope puts a lot of pressure on the motorized parking pawl, that is prius specific

 

The park button performs the same function as placing an ice car in Park, it engages a mechanical device in the transmission to lock it, preventing the driven wheels from turning. It's all fun and games until that mechanical device fails to engage, and your car rolls backwards 5 minutes after you parked it and then the po-po come to your door asking why your car rolled into someone else's car in the parking lot. Speaking from experience, lol. I've used the manual parking brake, in addition to 'park', every single time since that day.

 

Many places require you to set the parking brake if you're parked on a public street with any perceptible slope. I do just because it's the law and it seems sensible.

 

If you have a US-market, Gen 2 Prius, the brakes in the rear are drum brakes with mechanical self-adjusters. The way those work assumes that you use the parking brake with at least some regularity.

Any time you apply the parking brake, if the brake linings have worn more than a small threshold amount, it will cock a lever up over the next tooth on a wheel. The next time you release the parking brake and use the regular brake, you take the pressure off the adjuster, the lever pulls the wheel down by one tooth, and the adjuster expands (described further here). You get a maximum of one tooth of adjustment for each time there's a use of the parking brake, followed by use of the regular brake.

If the parking brake isn't being used regularly enough, the rear brakes will go gradually out of adjustment. This isn't easy to notice in a Prius, because the electronic brake control can sort of mask it; if it takes more fluid to apply the rears, the system just applies more fluid.

The illusion collapses, though, if the system ever drops into fail-safe mode for any reason, because then you are limited to the amount of fluid your foot moves before the pedal hits the floor.

 

A conventional automatic shifter will require you to push the lever to "P" before you'll be able to get the key out of the ignition.

Also, any time you turn the Prius off, it performs the same function as pushing the Park button.

 

I would for any automatic. It helps me prevent the vehicles weight from rolling and resting on the transmission. I also find it makes me happy to not hear a noisy clunk when first shifting out of park. Not sure if it would prevent future transmission issues, can't hurt.

Maybe newer fancier vehicles don't have this issue, but I've noticed it on just about every automatic vehicle over the decades.

 

+1. Pretty much my thoughts too.

 

Absolutely- parking on an incline puts quite a bit of load on the parking pawl. Releasing it puts stress on the mechanism (electric actuator on the Prius) and can cause slight wear on the pawl and toothed drum it engages. Setting the parking brake first places the vehicle load from the slope on the brakes, not the pawl.

A second benefit is that regular use not only helps the rear brakes to self adjust, but keeps the brake cables and levers "limber". I often see problems from rusted up/ seized parking brakes on cars where the owner never uses it.

 

You should check that the warning light for it on the dash works. That should help with forgetting.

 

The brake brake warning light should be more in-your-face, maybe beeping if you start rolling with it on. Maybe it does lol; I can't recall.

 

If you can actually move off with the parking brake set, it is not on hard enough. Press the brake another click more than the last time until you reach the point where you can no longer easily drive off with the parking brake set on.

With this method, you don't need to notice the brake warning light.

 

I'm usually reminded of the parkingbrake by the smell...

But ever since I started driving auto's, I no longer use them. It's not like the "Nether"lands have any hills let alone mountains...