I've been driving for two years and over 10,000 kilometers. I want to ask if anyone has encountered the following issues: 1. When I'm parked at a red light and then start to accelerate, I hear an alert sound inside the car that lasts for one to two seconds before disappearing, but there's no indication on the dashboard. What's causing this? 2. When waiting at a red light with the brake pedal pressed, the auto hold turns green, but then suddenly deactivates. I have to press the brake a second time for it to activate again. This issue only started appearing in the past month; previously, it would turn green with just one press.

The fault code shows two P0420s, one yellow and one red, both indicating the first bank. Is it the catalytic converter that's faulty or the oxygen sensor?

Will the brake lights illuminate during regenerative braking when you are not pressing the brake pedal?

Waiting at a traffic light, slow start, have to press the accelerator [angry]

The car is difficult to start two hours after turning off the engine.

Why does the start-stop function in the 2009 Smart cause the vehicle to stall? It usually happens when waiting at a red light. When the start-stop function is on and the light turns green, I find that the vehicle has already stalled, and I have to wait a moment before I can restart the vehicle.

Taycan owners, I have a question about a feature. As you might know, in the Taycan's triple display, the middle one shows the speed by default, and when the power meter is checked, it shows acceleration and energy recovery levels—blue for acceleration and green for recovery. In my car, with the default set to normal mode, when I press the accelerator, the blue bar shows up normally. However, when I press the brake, the green bar doesn't show at all, although the car brakes fine. Does this mean my braking relies solely on mechanical brakes without energy recovery? Is there a way to set it so the green bar shows normally when braking? I'm sincerely asking for advice, thanks everyone!

Is there a problem with the car if the auto start-stop system, once activated at a red light with a deep press, automatically reignites due to the long red light duration and causes noticeable shaking?

Gv80 shifts to neutral at a red light, makes a thump sound when starting.

I need some knowledge. This morning around 7:40, I encountered a black Tesla on an uphill section of the road, near the top where there's a traffic light. It was a red light, and the Tesla was in the second position, with me behind it. The car in front was slowly rolling back, and after I honked to alert them, the female driver snapped back, "It's a red light!" 😓. I want to learn whether the slow rollback was due to the steep slope or because the driver didn't apply the brakes.

I have a 2018 Haval H2 manual with a red badge. The ABS light is on, the central console reports an auto hold fault, a hill descent fault, and the steering wheel feels heavy as if it's lost power assist. Previously, a repair shop read the fault codes and showed a right rear wheel ABS fault. I replaced both rear wheel ABS sensors, but the issue persists, and now there's a new problem. Before, I could turn off the engine by pressing the start button once. Now, it doesn't turn off with one press; I have to press the brake and long-press the start button to force it to shut down. Does anyone know what's going on? I'm really fed up with this car. After this experience, I don't want to buy a GWM car again.