What are the reasons for the ABS warning light to illuminate in the Roewe 550?
4 Answers
ABS warning light can illuminate in various states, with different causes and solutions for each state, as detailed below: State 1: ABS warning light stays on constantly (most common). Cause 1: The ABS wheel speed sensor's sensing area is covered by dirt, mud, or other contaminants, affecting the sensor's ability to detect the corresponding speed signal. This prevents the ABS control module from determining the vehicle speed and calculating the wheel slip rate, thus failing to issue appropriate commands to regulate braking. Solution: Clean the dirt from the wheel speed sensor and adjust the gap between the sensor and the signal ring to restore normal function. Cause 2: Poor signal transmission due to loose connections in the system wiring or poor contact in the ABS relay, leading to system failure. Solution: Inspect the wiring 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 and voltage rises, the ABS warning light turns off. This can also occur if the ABS system's power supply voltage is too low, such as 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 stays on after engine start and only turns off when the engine is turned off (IGFF). Cause: Poor grounding contact in the ABS hydraulic valve body; poor contact in the ABS hydraulic valve body wiring connector; ABS control module failure. Solution: Loosen and 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 control module. State 4: ABS warning light illuminates during high-speed driving. Cause: During high-speed driving, the ABS control module 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 in the brake light. Solution: With the engine running, press the brake pedal, push the brake switch linkage down fully with a finger, then release the brake pedal to complete self-setting; replace the brake light switch if necessary. If the ABS warning light is illuminated, it is advisable 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.
The ABS warning light on the Roewe 550 usually indicates a minor issue with the ABS system. I experienced this myself while driving—the ABS light suddenly came on, which startled me, and I quickly pulled over. The most common cause is a dirty or faulty wheel speed sensor. For instance, if the sensor on the wheel accumulates dust or gets corroded by road salt, it can’t transmit signals to the system properly. Another possibility is a problem with the ABS pump. In the case of the Roewe 550, prolonged use might lead to insufficient oil pressure or aging components in the pump, triggering an error. Loose wiring harness connectors are also a frequent culprit—a few bumps on rough roads can dislodge the plugs. If a fuse is blown, you’ll need to check the fuse box in the engine compartment. When this happens, it’s best not to keep driving. A malfunctioning ABS can compromise braking safety, so taking the car to a professional repair shop to read the fault codes with a diagnostic tool is the most reliable approach. Roewe’s diagnostic tools can pinpoint the issue accurately. As a preventive measure, remember to rinse the inner side of the wheel hubs during car washes to avoid dust buildup.
As someone who frequently repairs cars, I must mention the reasons for the Roewe 550's ABS light coming on. A faulty wheel speed sensor is the most common cause—these sensors are located near the wheels, and if they get covered in dirt or oil, the signal becomes inaccurate. Next is an ABS pump malfunction; the pump in this Roewe model may fail to activate properly due to aging or internal wear. Electrical issues should not be overlooked either—a blown fuse is easy to check by opening the fuse box and referring to the manual for its location. Low battery voltage can also trigger false ABS warnings, so first measure the battery voltage drop with a multimeter. If the light comes on, try restarting the car a few times—sometimes the system misinterprets the situation. Check the wiring harness connectors for rust or damage, as Roewe's wiring design in tight spaces can lead to pinching. Visit a repair shop as soon as possible to scan for trouble codes with a diagnostic tool to avoid losing braking control at high speeds. If you're doing it yourself, cleaning the sensors is straightforward, but be careful not to damage them.
The ABS light on my Roewe 550 has come on a few times, which really worries me. The main causes include dirty wheel speed sensors, such as mud or water interrupting the signal. The ABS pump might be worn internally triggering an alarm, which is common in older Roewe models. A blown fuse can also trigger the light, and replacing it only costs a few bucks. Additionally, poor contact in the wiring or loose connectors after driving on bumpy roads a few times can cause this. This issue affects braking performance, so don't speed when the light is on—safety first. For a quick check, stop and inspect the sensors around the tires for cleanliness. It's best to visit a repair shop to scan the codes and locate the problem. Roewe cars have a dedicated interface, so it can be resolved quickly—don't try to disassemble it yourself.
