# The Common Mistake When Parking Automatic Cars on Inclines Avoid transmission damage by correctly using the parking brake before shifting into park. - **Source:** [La Nación](https://www.lanacion.com.ar) - **Published:** 2026-11-10 - **Topic:** [technology](https://brifing.si/c/technology) - **Original article:** - **On Brifing:** https://brifing.si/s/84117119-5c22-4e5c-9566-3834b78cd4c8 ## Transmission Lock Misconception Many drivers mistakenly believe that the 'P' position on an automatic transmission is sufficient to hold a vehicle on a slope. Relying solely on this setting forces the transmission's internal locking mechanism to bear the entire weight of the car, which can lead to mechanical strain and potential long-term damage. ## The Role of the Pawl When 'P' is selected, a metal component called a pawl engages with a gear to lock the output shaft. On an incline, the vehicle's weight pushes against this small part. Without a parking brake, this pressure causes the 'park lock' phenomenon, making the gear selector difficult to move later. ## Correct Parking Sequence To protect the transmission, always bring the car to a complete stop while holding the brake pedal. Apply the parking brake firmly before moving the selector to 'P'. Only after the vehicle is secured by the parking brake should you release the foot pedal and turn off the engine. ## Starting the Vehicle Safely The procedure for departing is equally critical to avoid unnecessary stress on the gearbox. Before shifting out of 'P' into 'D' or 'R', ensure the foot brake is depressed. Only release the parking brake once the transmission has been shifted into the desired gear to ensure a smooth transition. ## Electric Parking Brake Nuances Modern vehicles often feature electric parking brakes that may engage automatically. Drivers must verify the parking brake indicator light is active before releasing the foot pedal. If the automatic system is not enabled, the driver must manually engage the switch to ensure the vehicle is properly secured against gravity. ## Auto Hold vs Parking Brake It is essential to distinguish between the 'Auto Hold' feature and the parking brake. Auto Hold is designed to keep the car stationary during short stops, such as traffic lights, and is not intended for prolonged parking. Always use the dedicated parking brake for stationary periods to ensure vehicle safety. ## Technological Accessibility Shifts Automatic transmissions were once exclusive to high-end luxury models but are now standard in accessible vehicles. As this technology becomes ubiquitous, understanding the mechanical requirements of these systems is vital for all drivers. Proper operation prevents premature wear and ensures the longevity of the transmission components in everyday driving scenarios. ## Mechanical Integrity and Maintenance Following these steps prevents the 'park lock' effect, where the selector feels stuck due to excessive weight on the pawl. By distributing the load between the parking brake and the transmission, you maintain the integrity of the vehicle's drivetrain, avoiding costly repairs related to the transmission's internal locking gear mechanism. ## Sources covering this story - https://www.lanacion.com.ar/autos/el-error-que-se-puede-cometer-al-estacionar-un-auto-automatico-en-una-pendiente-y-como-evitarlo-nid10112026/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._