What does ECU mean in a car?

1 Answers
SimonLynn
07/28/25 10:01pm
ECU in a car refers to the onboard computer, which is essentially a specialized microcomputer controller for automotive purposes. The ECU has self-diagnostic and protection functions. When a system failure occurs, it can automatically record fault codes in RAM, read substitute programs from its memory to maintain engine operation, and display fault information on the dashboard. This allows car owners to identify problems and drive the vehicle to a repair shop for maintenance. In S-class sedans, ECUs are not only used in engines but can also be found in many other systems, such as anti-lock braking systems, four-wheel drive systems, electronically controlled automatic transmissions, active suspension systems, airbag systems, and multi-directional adjustable electrically controlled seats - each equipped with their own ECU.
Was this review help?
12
4
Share
More Forum Discussions

What is the starting current of a car?

The starting current of a car is between 100 to 300 amperes. If the engine has a larger displacement, the starting current will increase accordingly. Starting current refers to the line current input when the motor is connected to the rated voltage and starts from zero speed. The starting current of a motor is generally 5 to 7 times its rated current. For medium and large motors, the starting current should be limited to 2 to 2.5 times the rated current. For large-capacity motors, methods such as autotransformers or compensation switches are often used to limit the starting current. An autotransformer is a transformer whose windings are on the same coil for both primary and secondary circuits, with the primary and secondary windings directly connected in series for self-coupling.
7
5
Share

Which country produces Landwind cars?

Landwind cars are produced in China. They are manufactured by Jiangling Holdings Co., Ltd., a joint venture established under the guidance and support of China's new automotive industry policies by Changan Automobile Co., Ltd. and Jiangling Motors Group. Landwind primarily engages in the production and sales of automotive products, with its main offerings being SUVs and MPVs. The Landwind Xiaoyao is a brand-new coupe crossover SUV, equipped with two 1.5T engines: the Dong'an 4G15T (multi-point injection) and the Jiangling JX4G15 (direct injection). The Dong'an 4G15T engine delivers a maximum power of 110 kW (150 PS) and a maximum torque of 210 Nm, paired with a 5-speed manual transmission. The Jiangling JX4G15 engine offers a maximum power of 120 kW (163 PS) and a maximum torque of 250 Nm, mated to either a CVT or a 6-speed manual transmission.
2
2
Share

How to Defog the Car Windshield?

Methods to defog the car windshield are: 1. Open a small gap in the side windows to allow air convection between the inside and outside of the car, which naturally dissipates the fog; 2. The air conditioner's cold air can defog—turn on the car's fan and cooling switch to direct cold air onto the glass, and the fog will disperse; 3. Turn on the air conditioner's hot air, park the vehicle by the roadside, adjust the temperature to around 25 degrees, and wait until the fog on the inside of the glass is completely dried, then lower the temperature slightly. The windshield is made by sandwiching two pieces of glass together with a layer of PVC plastic in between, which gives the windshield the ability to absorb energy and dampen vibrations.
3
3
Share

What is the reason for the loud ticking sound in a Mercedes-Benz Smart at idle?

The reason for the loud ticking sound in a Mercedes-Benz Smart at idle is due to clogged fuel injectors, faulty spark plugs, etc. Dirty fuel injectors: When the fuel injectors are dirty, the engine may experience difficulties starting, reduced power, sluggish acceleration, shaking at idle, black smoke emissions, excessive exhaust emissions, and in severe cases, the engine may fail to start. The solution is to perform a no-disassembly cleaning of the fuel injectors, which can also remove carbon deposits from the combustion chamber and the top of the pistons. Poor spark plugs: When the performance of the spark plugs deteriorates, you may feel a lack of engine power while driving, jerking during rapid acceleration accompanied by a "popping" sound from the exhaust pipe, and engine shaking at idle. The solution is to have the spark plugs checked at a repair shop every 30,000 kilometers and replaced if necessary.
2
1
Share

What causes the clicking sound in the front wheels when braking in the Wildlander Hybrid?

The reasons for the clicking sound when braking include: metal hard spots on the brake pads; severe wear of the brake disc; small stones or a water film between the brake disc and brake pads. Solutions: If there are tiny metal particles on the brake pads, they will produce a sharp sound when braking. You can try slamming the brakes a few times or grinding/replacing the brake pads. If the car's brake disc has been used for a long time, deep grooves may form at the friction points with the brake pads, causing abnormal sounds when braking. If the grooves are not deep, they can be resolved by grinding the edges of the brake pads. If the grooves are deep, the brake disc should be replaced. Braking precautions: When approaching a red light, do not brake heavily immediately. Instead, release the accelerator in advance to slow down as you approach the intersection, and then apply the brakes to stop once the speed has reduced. Always maintain a safe distance from the vehicle in front. In case of an emergency, apply the brakes firmly for emergency stopping.
2
5
Share

Why is the Mercedes-Benz smart screen not lighting up?

The reasons for the screen not lighting up include damage to the dashboard illumination light; a broken power supply wire for the dashboard; or a blown fuse for the dashboard power supply. Inspection: First, check the dashboard power supply fuse and replace it if blown. Disassemble the dashboard—the illumination lights are located at the back of the dashboard—and replace any non-functioning lights. If only individual lights are not working, it indicates that the fuse and wiring are fine. Advantages of the smart car: Fuel-efficient and easy to handle; spacious and comfortable interior; frameless windows are practical and stylish; the trunk features a dual-opening design for ample storage space; the rear wiper activates automatically when the windshield wiper is turned on or when reversing; integrated seat design; full underbody protection; U-shaped torsion beam rear suspension. The higher seating position provides a broad field of vision.
3
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.