What is the reason for the brake failure of Changan Benben e-star?

[MaverickLynn]

The brake failure of Changan Benben e-star may be caused by damage to the vacuum pump. It is recommended to contact a 4S store for maintenance and repair in a timely manner. The Benben E-Star is a microcar under Changan Automobile. Changan Automobile currently has several subsidiaries such as "Changan Automobile Co., Ltd.", "Changan Ford Automobile Co., Ltd.", etc. Below is an introduction to Changan Automobile: 1. R&D Structure: Chongqing Changan Automobile Co., Ltd., referred to as Changan Automobile. It has established a global collaborative R&D structure with different focuses in "six countries and nine locations" including Chongqing, Beijing, Hebei, Hefei, Turin in Italy, Yokohama in Japan, Birmingham in the UK, Detroit in the US, and Munich in Germany. In 2014, the cumulative production and sales of Changan's Chinese brand vehicles exceeded 10 million, making it the first Chinese brand to enter the "10 million club". In April 2018, Changan Automobile officially announced its third entrepreneurship-innovation and entrepreneurship plan, aiming to become a world-class automobile enterprise and transform into an intelligent mobility technology company. 2. R&D Center: The Changan Automobile Global R&D Center is located in Yufu Industrial Park, Liangjiang New District, Chongqing, and was officially put into use on April 9, 2019. The Changan Automobile Global R&D Center covers an area of more than 1,000 acres with a total investment of 4.3 billion yuan. It is an open and shared intelligent R&D platform integrating global resources, featuring 7 major functions including design, testing, and management, covering 12 major areas such as simulation analysis, noise and vibration, collision safety, etc., and includes 180 laboratories for hybrid power, air conditioning systems, non-metallic materials, etc., as well as a global data center built using cloud technology.

[WilliamLee]

Recently while driving my friend's Changan Benni e-star, I suddenly felt the brakes were spongy, like stepping on cotton when pressing the pedal. Having tinkered with many cars myself, I found this condition is mostly related to brake fluid issues. It could be either fluid leakage in the pipelines causing insufficient pressure, or the brake fluid absorbing moisture after being unchanged for too long. Once I even encountered brake discs polished mirror-smooth - of course the friction effect was greatly reduced. If the electric booster pump in an EV malfunctions, it can also cause this. I've seen cases where faulty sensors caused ABS to intervene incorrectly. Never force the vehicle to keep going when encountering such issues - pull over immediately and call for assistance. Remember to check the brake fluid reservoir's level line monthly, and during maintenance, ask the mechanic to specifically inspect the brake pad thickness.

[LaEmma]

In my 15 years as an auto mechanic, I've encountered three cases of Brake Failure in the BenBen E-Star. The scariest was a ruptured vacuum hose for the brake booster. The owner described the brake pedal feeling 'as hard as pushing a brick.' Upon disassembly, we found the rubber hose had aged and cracked open. Another dangerous issue is when the master cylinder piston gets stuck – it feels like something is physically blocking the brakes. Modified vehicles require extra attention; one customer installed mismatched brake pads that halved the braking force. I recommend performing four-wheel brake maintenance every 20,000 kilometers, especially for vehicles parked outdoors year-round where rainwater can cause the caliper guide pins to rust and seize.

[DeJeffrey]

Just took over the family's three-year-old BenBen e-star and encountered brake failure, nearly rear-ending someone at the neighborhood entrance. The 4S shop inspection revealed that the wheel speed sensor was clogged with mud, causing the ABS system to misjudge wheel lock-up. The technician also found air bubbles in the brake fluid, likely from incomplete air bleeding during the last oil change. They took the opportunity to replace the nearly worn-out brake pads, and now the braking feels almost like new. It's recommended to wash the undercarriage after driving through muddy roads post-rain—repairs for this can cost around two thousand yuan.