Should I engage the P gear first or the electronic handbrake first?

[SanMaya]

For automatic transmission vehicles, you should engage the P gear first when parking. Below are some precautions for gear shifting while driving: 1. Normal roads: There are no specific requirements for gear selection; you can drive normally by keeping the gear in D (Drive). 2. Parking: When the engine stops running, you need to shift to P (Park) to indicate that the vehicle is no longer in use. Some cars require shifting to P before the key can be removed. 3. Reversing: After pressing the brake to stop the car from moving forward, you can shift to R (Reverse). Gently releasing the brake will allow the car to move backward. 4. Waiting while parked or driving in congested traffic: You can shift to N (Neutral). 5. Highways or overtaking at high speeds: You can shift to S (Sport) mode. S mode is the sport mode for the car, allowing free gear changes like D mode. You can also choose S mode when climbing hills, as this gear provides the maximum torque output and acceleration.

[OElizabeth]

Once at the 4S shop, I saw a technician working on a transmission, and he explained the sequence very carefully. After you stop the car and press the brake, first engage the electronic parking brake to let the brake calipers grip the brake discs—this secures the car, with the vehicle's weight supported by the braking system. Wait until the parking brake light comes on before shifting to P (Park), so the transmission gears don’t have to bear the full force of the car’s weight sliding downhill. Especially when parked on a slope, if you shift to P before engaging the parking brake, you’ll hear a 'click' sound the next time you shift gears—that’s the transmission lock gear being forced apart, which can cause damage over time. Now I’ve developed muscle memory: stop completely, engage the parking brake, check the dashboard indicator, then shift to P and turn off the engine.

[Harvey]

Last month, my best friend parked on an underground garage ramp and directly shifted to P gear before getting out of the car. As a result, the car suddenly rolled back half a meter! The mechanic later explained that the issue was caused by not engaging the electronic parking brake first. The braking system is the main force—the calipers locking the brake discs are much more reliable than the transmission gears. After coming to a complete stop, you should first activate the electronic parking brake. Wait until the red exclamation mark lights up on the dashboard, indicating that the vehicle's weight is now fully supported by the braking system. Then, shifting to P gear acts as a double safeguard. Especially for models equipped with auto-hold functionality, failing to engage the electronic parking brake before shifting to P gear may cause the system to misjudge the load-bearing points.

[AshleyAnn]

Old Zhang, who has been driving a taxi for twenty years, once talked to me about this. He said that car manufacturers designed the electronic parking brake to protect the precision gears in the transmission. The locking mechanism of the P gear is actually quite fragile—on slopes, it bears the entire weight of the car, which can cause the gear teeth to deform and wear out. In contrast, the brake calipers and brake discs are made of more pressure-resistant materials, so it's essential to let the electronic parking brake take on the vehicle's weight first. The process is simple: come to a complete stop with the foot brake → engage the electronic parking brake → release the foot brake → shift into P gear. The moment you release the foot brake, you'll feel the car slightly sink, which is proof that the weight has been transferred to the braking system.

[AlainaLynn]

Watching car repair livestreams really helped me understand the mechanism differences. Electronic parking brakes directly control the brake calipers, clamping the rotors like vise grips; whereas the P gear uses a small latch in the transmission to lock the gears. When parking on a slope, engaging P gear first means that tiny latch bears the entire vehicle's weight. A car-savvy friend taught me this trick: After coming to a complete stop, first engage the electronic parking brake, then tentatively release the foot brake. If the car doesn't move, it means the braking is effective - only then shift to P gear for double protection. Remember the dashboard is most reliable - proceed to the next step only when the red parking brake light is illuminated.

[DeKira]

Lurking in car forums for three years has taught me a lot of valuable insights. An engineer once posted a detailed comparison of force conditions: when the electronic parking brake is engaged, the braking force can exceed 1,000 Nm, while the parking pawl in P mode can only withstand a load of 400 Nm. The optimal operation sequence is 'press the brake pedal firmly → engage the electronic parking brake → release the foot brake to confirm the vehicle isn't sliding → shift into P mode'. Once, when parking at a mountain guesthouse, I followed this procedure and the next day when shifting gears, there was none of the usual transmission jolt noise. Cars, like people, need gentle treatment of their critical components.