The electronic power steering during starting Fuse keeps blowing when I start my car. I have a 2018 Ford Edge with the ecoboost. I have no idea what could be wrong with it or how to fix it other than replacing the fuse over and over. Can someone please tell me where to start?

Hi,

Fuses blow when too much current is being pulled through them.  As it's happening frequently, this can really only mean that there is a fault with the electric PAS motor.

It could be a wiring short, however that would most likely continue to blow fuses while driving.  So personally I think it'll be the electric motor itself.  The motor is supplied as one with the rack, so most garages would replace the rack & motor together.

I would recommend having an auto electrician check the wiring before going to the expense of replacing the motor & rack.

On 4/12/2024 at 1:35 PM, TomsFocus said:

Fuses blow when too much current is being pulled through them.  As it's happening frequently, this can really only mean that there is a fault with the electric PAS motor.

It could be a wiring short, however that would most likely continue to blow fuses while driving.  So personally I think it'll be the electric motor itself.  The motor is supplied as one with the rack, so most garages would replace the rack & motor together.

I would recommend having an auto electrician check the wiring before going to the expense of replacing the motor & rack.

I would add that if the fuse takes a while to blow, i.e. the current draw is averagely high and only trips the fuse when the motor gets hot and it's windings resistance goes lower, then there may be a corresponding DTC in the steering ECU that tells you that the motor current draw is outside normal operating limits (high). That may confirm the motor as being the suspect component.

A DTC may also be recorded if one of the motor wires has a short to ground or short to 12v. i.e. wiring/harness issue.

There is the 3rd option that the mechanical part of the steering is putting too much load on the motor due to excess friction, i.e. lack of lubrication or corrosion.