What is the brake failure issue with the BenBen e-start?

1 Answers
VonDominic
07/29/25 1:56pm
The brake failure issue with the BenBen e-start is caused by a batch failure of the vacuum pump, and the manufacturer provides free replacements for customers. How the vacuum pump works: New energy vehicles use an electric pump to simulate the vacuum boost of an engine. The vacuum pump maintains the vacuum level in the boost system above several tens of kilopascals to provide sufficient braking assistance. Vacuum pump failure: When the system's vacuum level drops, the electric pump activates to replenish the vacuum, which is why many new energy vehicles produce intermittent working noises. When the electric vacuum system fails, it results in insufficient vacuum similar to an engine stalling in traditional cars, causing the brake pedal to become increasingly hard, which may ultimately lead to serious accidents.
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