How to Use the M+ and M- in an Automatic Transmission?
2 Answers
The method for using the M+ and M- in an automatic transmission is as follows: 1. When driving continuously downhill, adjust the gear to 2nd or 3rd using M+ or M- to utilize the engine's braking effect for vehicle deceleration; 2. Use M- to downshift and provide sufficient torque. When encountering a steep slope, downshift to 1st or 2nd gear for more power during uphill driving; 3. Adjust the gear to 2nd using M+ or M- to reduce wheel slippage. The correct steps for starting an automatic transmission vehicle are: 1. Turn the ignition key to the second position (power mode); 2. Press the foot brake and shift the gear from P to N; 3. Release the foot brake and turn the ignition key to the ignition position; 4. Press the foot brake, release the handbrake, and shift the gear from N to D; 5. Depending on road conditions, smoothly press the accelerator pedal.
I've been driving for over ten years, and the M+ and M- in automatic cars are just manual mode helpers. I usually use them on highways to save fuel, shifting up with M+ to keep the RPM stable; when climbing hills and lacking power, I switch to M- to downshift, making it easier with increased torque. On downhill roads, extra caution is needed—using M- to control speed prevents brake overheating. Last time I went to the mountains, I directly shifted to M mode on a steep descent, and the whole trip felt much safer. For new drivers learning, don't rush—first get familiar with the dashboard display, and make small adjustments once speed exceeds 30 km/h. Remember not to misuse it at low speeds to avoid damaging the transmission. Overall, it's simple and useful, and can be a lifesaver in critical moments.
