Leaderboard

As you have both the ABS and ESP lights on then it must be something common to both systems, 1 of the 4 wheel sensors or just a loose wire or connector to 1 of the sensors maybe. If it only happens after the car has been used for a while that would suggest something that is changing with temperature, again a metal connector that expands and gets loose. If the Citroen garage diagnostic told them which sensor was reporting the fault then I would check all the wires to the sensor and the sensor reporting a problem. Ian Black 55 VTR+