What is the reason for the automatic start-stop failure in the new smart car?

1 Answers
GraceFitz
07/30/25 1:37am
The reasons for the automatic start-stop failure in the new smart car are as follows: Battery depletion: The automatic start-stop function primarily relies on the battery's capacity. When starting the engine, the extremely high current consumes a significant amount of battery power. Therefore, cars equipped with this function use high-capacity batteries that can withstand large current surges. When the battery power is depleted to a certain extent and can no longer continuously provide the massive current required, the automatic start-stop function will automatically deactivate to protect the battery and maintain its lifespan. In such cases, replacing the battery with a new one is necessary. Vehicle temperature and other issues: The engine coolant temperature has not risen after a cold start (normally below 70 degrees Celsius); the outside temperature is below 5 degrees Celsius, or the interior temperature with heating on is below 20 degrees Celsius; the steering wheel angle exceeds 30 degrees; the driver in the front seat is not wearing a seatbelt; parking on a slope (e.g., a gradient of 10% or more).
Was this review help?
2
3
Share
More Forum Discussions

How Long Does It Take to Replace a Driver's License on Traffic Management 12123?

Generally, the replacement of a driver's license through Traffic Management 12123 takes within one week. "Traffic Management 12123" is the official mobile client application of the Ministry of Public Security's Internet-based comprehensive traffic safety service management platform (hereinafter referred to as the Internet platform), developed and technically supported by the Traffic Management Science Research Institute of the Ministry of Public Security. This software serves a wide range of users nationwide, including vehicle owners and drivers. Traffic management departments, leveraging the "Traffic Management 12123" mobile APP and the Internet-based comprehensive traffic safety service management platform, have introduced a new initiative allowing online binding of non-personally owned vehicles for self-service handling of traffic violations, in addition to the existing window and self-service processing options. This platform significantly reduces waiting times at traffic violation processing windows and associated travel costs.
17
5
Share

What is the difference between Volkswagen 275a and 275c?

The difference between Volkswagen 275a and 275c is: Volkswagen 275a does not support LCD instrument panel map projection and Dynaudio sound system; 275c supports LCD instrument panel map projection and Dynaudio sound system. The numbers following Volkswagen 275a and 275c represent the car's coding. Relevant information about Volkswagen is as follows: 1. Company Profile: Volkswagen is an automobile manufacturing company headquartered in Wolfsburg, Germany, founded by Ferdinand Porsche on March 28, 1937. 2. Vehicle Models: Volkswagen's vehicle models include: sports compact cars, small family cars, EOS sports cars, Volkswagen Golf, Volkswagen Bora, Volkswagen Sagitar, Volkswagen Jetta, Volkswagen CC, Volkswagen Passat, and Santana.
10
3
Share

Can the Electronic Parking Brake Perform Emergency Braking?

Electronic parking brake can perform emergency braking. In extreme situations during driving, such as brake pedal failure or driver losing consciousness, pulling the electronic parking brake will trigger emergency braking. At high speeds, the emergency braking is controlled by the ESP unit, applying hydraulic braking force slightly less than full braking to all four wheels. Only when the vehicle speed approaches a stop, such as below 6 kilometers per hour, will the electronic parking brake bring the vehicle to a complete halt. The working principle of the electronic parking system is the same as that of the manual mechanical parking brake system, achieving parking through the friction clamping between the brake shoes and the brake drum or the friction pads and the brake disc. The difference lies in the control method, where electronic buttons and motor actions replace the original manual operation and mechanical linkage. Therefore, the system is fully named the Electronically Controlled Mechanical Parking Brake System.
12
0
Share

What to Do When Your Car Won't Start in Winter?

Solutions for cars that won't start in winter: 1. Weak battery: The main symptom is the starter motor turning but with insufficient speed, resulting in weak starting. You can call for roadside assistance or jump-start the car with another vehicle. After jump-starting, it's recommended to take the car to a repair shop to recharge the battery. 2. Fuel flow obstruction: This manifests as no fuel pressure in the engine's fuel supply line. You can either move the car to a warmer environment and wait about ten minutes before attempting to start, or completely resolve the issue by cleaning the fuel system. 3. Ignition system failure: Inspect the ignition system to eliminate causes of low ignition energy, such as spark plug electrode gap, ignition coil energy, or high-voltage line condition.
6
1
Share

Can You Downshift Directly from 3rd Gear to 1st Gear?

Manual transmission vehicles can directly downshift from third gear to first gear because manual transmissions do not require sequential downshifting. However, it's essential to downshift to an appropriate gear based on the current speed. Sometimes, to ensure smooth downshifting, a slight throttle blip is needed. When driving a manual transmission car, before upshifting, you must first accelerate. When the speed reaches the suitable range for the next higher gear (or you can check the RPM, typically 2500~3000 RPM for smoother shifting—too low may cause lugging, and too high may result in jerking), promptly shift to the higher gear. When downshifting, only when the speed drops to a certain value should you shift to a lower gear.
14
2
Share

What does a six-speed dual-clutch transmission mean?

Six-speed dual-clutch means there are six gears and two gearboxes, one controlling gears 1, 3, and 5, and the other controlling gears 2, 4, and 6. While using the current gear, the next gear is already automatically prepared, resulting in very short shift times without the delay of a manual transmission. The six-speed dual-clutch transmission is based on a manual transmission but belongs to the automatic transmission category. In addition to the flexibility of a manual transmission and the comfort of an automatic transmission, it also provides uninterrupted power output. Since the six-speed dual-clutch has two clutches that coordinate to shift gears, there is always power output during the shifting process without any interruption. This technology is widely used.
3
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.