Has anyone ever heard of the ESP light not flashing and cutting power when traction has been lost? I have read everywhere about the traction light staying on if there are errors in the haldex system but I cannot find any information about the ESP light not flickering on and off whilst cutting power when the wheels have lost traction and are spinning. If I push the ESP button the light comes on and stays on but nothing changes. I have ordered a new haldex pump and controller, as I know that my pump was not working. The car is a APY 2000 s3.