How Many Years Are 7-Seater New Cars Exempt from Inspection?

What Causes the ABS Light to Illuminate in a Cadillac?

ABS light illumination can occur in various states, with different causes and solutions for each state. The details are as follows: State 1: ABS warning light remains constantly illuminated (most common). Cause 1: The ABS speed sensor's sensing part is covered by dirt, mud, or other contaminants, affecting the sensor's ability to detect the corresponding speed signal. This prevents the ABS computer from determining the vehicle's speed or the wheel's slip rate, thus failing to issue appropriate commands to adjust braking. Solution: Clean the dirt from the speed sensor and adjust the gap between the speed sensor and the signal ring to restore normal function. Cause 2: Poor signal due to loose connections between system wires or poor contact of the ABS relay, leading to system malfunction. Solution: Check the wire connections and reconnect any loose parts. State 2: ABS warning light intermittently illuminates but turns off during acceleration. Cause: When multiple vehicle electrical devices are in use, the battery voltage drops below 10.5V. As the engine speed increases, the voltage rises, and the ABS indicator turns off. The ABS system's power supply voltage is too low, possibly due to poor terminal contact or grounding issues. Solution: Check the battery's specific gravity; inspect the charging system; examine the power supply (e.g., voltage relay or poor power contact). State 3: ABS warning light remains illuminated after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding connection of the ABS hydraulic valve body; poor contact of the ABS hydraulic valve body's wire connector; ABS computer malfunction. Solution: Loosen and then retighten the grounding screw of the hydraulic valve body, cleaning the contact surface if necessary; check if the connector gap has widened; replace the ABS or ABS/ASR computer. State 4: ABS warning light illuminates during high-speed driving. Cause: During high-speed driving, the ABS computer detects a significant discrepancy between the rear and front wheel speed signals; incorrect tire or wheel rim specifications. Solution: Refer to the vehicle's tire and wheel rim specifications, as indicated on the label near the fuel tank cap. State 5: ABS warning light intermittently illuminates. Cause: Improper adjustment of the brake light switch; poor internal contact of the brake light. Solution: With the engine running, press the brake pedal, push the brake switch linkage down with your finger, then release the brake pedal to complete the self-setting position; replace the brake light switch if necessary. If the ABS warning light is illuminated, it is recommended not to continue driving. An illuminated ABS light indicates a malfunction in the vehicle's anti-lock braking system. During emergency braking, if the wheels lock up, the vehicle may skid uncontrollably, preventing the driver from slowing down or adjusting the vehicle's trajectory, posing significant safety risks.

16

4

Share

What is the Honda Black Label car?

Black Label is exclusive to Chevrolet's sports models, and there is no Honda Black Label model. The following is a detailed introduction about the Black Label Chevrolet: 1. Introduction: As the largest brand under the General Motors Group, Chevrolet can be considered one of the most successful automotive brands in the world based on cumulative production to date. It ranks first in U.S. sales charts. 2. Models: Its range of models is very extensive, from compact cars to large four-door sedans, from vans to large pickup trucks, and even from SUVs to sports cars. Consumers can find a corresponding model for any type of vehicle they need within Chevrolet's lineup.

18

0

Share

Should the parking brake be pulled up or released?

When parking, the handbrake should be pulled up, and it needs to be released when starting. The handbrake, also known as the auxiliary brake, operates differently from the main braking system. It uses a steel cable connected to the rear brake shoes to apply braking force to the vehicle. 1. Precautions: Prolonged use of the handbrake can cause plastic deformation of the steel cable. Since this deformation is irreversible, long-term use will reduce its effectiveness and increase the handbrake's travel distance. 2. Principle: After pulling the handbrake, a hydraulic auxiliary cylinder is utilized to push the main hydraulic cylinder beneath the vehicle, which then drives the air valve. Once the air valve is activated, it engages the brake drive shaft.

17

0

Share

Why does the brake suddenly become very hard to press while driving?

The issue is related to pressing the brake before the engine is turned off; the car's braking system operates at its maximum efficiency only when the engine is running, and the brake booster pump is the key component behind the vehicle's braking function. When the engine is off, the brake booster pump stops working. Typically, pressing the brake pedal three times will deplete its remaining vacuum force, making the brake feel very hard due to the lack of assistance. Here are additional details: Solution: In this situation, simply restart the engine and then try pressing the brake pedal firmly again. Once the engine is running, the brake booster pump will resume operation, and the brake pedal will return to normal function.

9

3

Share

Where is the handbrake of the Mercedes-Benz commercial vehicle located?

Mercedes-Benz commercial vehicle handbrake is located on the left side of the steering column. Here are the specific details: 1. Automatic parking function: In traffic congestion, as long as the brake is pressed and the vehicle comes to a complete stop, the system will determine that the vehicle needs braking and automatically engage the handbrake. To start moving, simply lightly press the accelerator, and the handbrake will automatically release. 2. Electronic handbrake: It adopts an integrated caliper, where the motor is integrated into the brake caliper, eliminating the pull-cable mechanism. Hydraulic braking is used during regular driving, while motor braking is used for parking. This form requires electronic circuits to intervene in the rear wheel braking system, making it relatively more complex.

17

1

Share

What is the reason for slow acceleration after replacing the belt on a scooter?

The reason is that the scooter's belt has become loose. 1. Other possible causes: In addition, you can check whether the air filter, carburetor, or exhaust pipe are clogged. Clean or replace the air filter, clean the carburetor, and inspect the carburetor's mixture ratio, fuel level, vacuum diaphragm, needle valve, and electric choke for any issues. Also, check if the vacuum fuel valve is faulty, whether the spark plug is damaged or if there is a high-voltage ignition failure, and whether the drive belt or pulley is slipping. These are common causes of insufficient power and slow speed in scooters. 2. Advantages: The biggest advantage of belt drive is that it requires no maintenance; simply replace it when it reaches the end of its service life.

5

0

Share

How Many Years Are 7-Seater New Cars Exempt from Inspection?

What Causes the ABS Light to Illuminate in a Cadillac?

What is the Honda Black Label car?

Should the parking brake be pulled up or released?

Why does the brake suddenly become very hard to press while driving?

Where is the handbrake of the Mercedes-Benz commercial vehicle located?

What is the reason for slow acceleration after replacing the belt on a scooter?

What is the mileage and time for the first maintenance of Cadillac XT4?

How many seconds does the Lamborghini Aventador take to accelerate from 0 to 100 km/h?

How Far Can You Drive When the Fuel Gauge Light Turns Red?

What Does the Yellow Exclamation Mark Light in a Car Mean?