Sprinter esp lights

[Tricky2020]

Please if anyone can help I'm new here and need some advice my Mercedes sprinter 2010 is playing up when I accelerate in 4th gear up to say 59mph the esp light comes on and then I cant drive any faster than 40mph if I turn off the ignition then straight back on the light goes out and I can continue to accelerate really annoying
Is this the wheel speed sensor ?? I really have no idea
Please if anyone can help I would really like to understand this
Many thanks