Mechanics Warn: Using The "P" (Park) On The Wrong Automatic Transmission Can Wear, Damage, And Even Break Your Car's Transmission

Mechanics Warn: Using The “P” (Park) On The Wrong Automatic Transmission Can Wear, Damage, And Even Break Your Car’s Transmission

Written by Carla Teles

Published on 21/09/2025 at 22:07

Alerta: seu câmbio automático pode quebrar. Entenda por que usar o “P” (Parking) errado causa desgaste e aprenda a sequência correta para estacionar sem danificar.

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Mechanics Warn: Car Weight on the “Parking” Lock Wears Out and Damages the Automatic Transmission; Learn the Correct Way to Park.

The comfort of the automatic transmission has revolutionized the way we drive, but a common habit among drivers could be costing a lot and leading to severe damage. Using the “P” (Parking) position incorrectly, especially on hills, is causing premature wear and even breaking the transmission. The warning, highlighted by specialists and reported by InfoMoney, reveals that many drivers put all the weight of the vehicle on a small internal component of the gearbox, instead of properly using the parking brake.

The problem is not with the “P” function itself, but rather with the order in which it is applied. When parking on a decline or incline and moving the lever directly to “P” before engaging the parking brake, the vehicle “rests” on the transmission lock. This generates immense tension that, over time, can damage vital components, leading to complex and costly repairs.

How the “P” (Parking) Really Works?

Many drivers assume that “P” works like a super-strong brake, but its mechanics are fundamentally different. As detailed by specialized publications on transmissions, such as Street Smart Transmission, cited by InfoMoney, the “Parking” position engages a device called a “locking pawl” (or ratchet). This is a metal pin that fits into a toothed gear connected to the output shaft of the transmission, physically preventing the wheels from turning.

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The Common Mistake That Wears Out the Transmission

Accelerated wear occurs the moment the driver stops on a hill, takes their foot off the service brake (the pedal), and the car moves a few centimeters until it “locks” into “P”. At that moment, the entire weight of the vehicle (which can easily exceed a ton) is being held only by that small metal pawl. Ford Mexico, in a statement also reported by InfoMoney, warns that this continuous practice causes severe wear on the pawl and the gear where it fits.

A classic symptom of this abuse is the difficulty in moving the lever out of the “P” position when trying to drive the car. The driver may notice a strong “jolt” or the lever being “stuck”, requiring unnecessary force to disengage. This happens because the weight of the car is pressing on the lock, making its release difficult and straining the entire mechanism. In extreme cases, the pawl may crack or break, leaving the car “loose” (even in “P”) or requiring the replacement of internal transmission components.

What is the Correct Sequence for Parking an Automatic Transmission?

To ensure the longevity of the automatic transmission and avoid damage, the correct sequence when parking is essential and should become a habit. Experts agree: the first step, with the car completely stopped and the foot still on the brake pedal, is to firmly engage the parking brake.

Only after feeling that the parking brake is effectively holding the weight of the vehicle (the driver can slightly relieve the brake pedal to confirm) should the lever be moved to the “P” position. By doing this, the “Parking” lock engages without tension, serving only as the safety redundancy for which it was designed. When leaving, the order is reversed: press the service brake, start the car, move the lever from “P” to the desired gear (D or R), and only then release the parking brake.

The proper maintenance of the automatic transmission is essential to avoid costs that can easily exceed four or five digits. A simple change of habit when parking can save the lifespan of your car’s transmission.

And you, were you already aware of this correct sequence? Do you usually use the parking brake before shifting to “P” or did you learn it differently? Share your experience and opinion in the comments below.

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Mechanics Warn: Using The “P” (Park) On The Wrong Automatic Transmission Can Wear, Damage, And Even Break Your Car’s Transmission

Mechanics Warn: Car Weight on the “Parking” Lock Wears Out and Damages the Automatic Transmission; Learn the Correct Way to Park.

How the “P” (Parking) Really Works?

The Common Mistake That Wears Out the Transmission

What is the Correct Sequence for Parking an Automatic Transmission?

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Mechanics Warn: Using The “P” (Park) On The Wrong Automatic Transmission Can Wear, Damage, And Even Break Your Car’s Transmission

Mechanics Warn: Car Weight on the “Parking” Lock Wears Out and Damages the Automatic Transmission; Learn the Correct Way to Park.

How the “P” (Parking) Really Works?

The Common Mistake That Wears Out the Transmission

What is the Correct Sequence for Parking an Automatic Transmission?

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