I have a 355 and when the car reaches 35 MPH the ABS light comes on. When the car is turned off the ABS light goes off untill the car reaches speed again. The dealer here only has a SD-2 which won't link up to my computer. When I read the code by putting the fuse in the socket, I come up with the code 5.4 Low pressure. When I bought the car it came with that fault. Any body has any ideas?