Description of the defect

In the vehicle behaviour stabilisation control system (VSA), due to an inappropriate fail-safe control programme, when the electronic braking transmission (ESB system) malfunctions, the fail-safe function that applies braking force according to the brake pedal force does not work and the brake pedal operating force increases.

Improvement Description

The fail-safe control programme for the VSA modulator will be replaced with a countermeasure programme.

Chassis number of target vehicles

VEZEL

RU3-1200021～RU3-1214074
RU4-1200009～RU4-1203482

Automotive maintenance cannot determine the cause based on symptoms alone.
Be sure to perform diagnosis and inspection before determining the cause of the failure.