Hi there, I'm desperate for some help. I keep getting the 'ESC Service' message coming up, as well as 'Hill Start' and 'Parking Pilot' not working messages. As well as Skid control lights and the ABS light display. It's intermittent but when I turn my steering to the left, all the warning light comes on it happens, it affects my power steering and the engine doesn't run as smoothly. I have changed all my brake systems. Do you know if it is a common problem and if that would fix it?

I'd appreciate your help as soon as possible

There are two possible causes of your problems. Firstly low system voltage, commonly caused by the state of charge of the battery being less than 70%. It can also be caused by poor earth connections between the battery negative and the main chassis earth point. The second possible problem on a 2015 Mondeo would be a faulty ABS wheel sensor which causes the vehicle not to be able to accurately detect the speed of each wheel.

You need to use a multimeter and measure the battery voltage directly on the terminals. Do this approximately 1 hour after the vehicle has been parked. I'll attach a SOC table below, but if your voltage is less than 70% then you need to charge the battery for at least 12 hours with a Smart battery charger. Remember to connect the charger leads with the positive directly to the battery terminal and the negative to the chassis earth point, NOT to the battery negative.

If your battery voltage is correct then you need to use FORScan on a windows laptop and read the stored diagnostic trouble codes (DTC's) don't use a generic code scanner as they don't read all of the Ford specific codes. It will be able to determine if you have a ABS wheel sensor fault, and which wheel it is.

On 5/14/2024 at 3:52 PM, unofix said:

There are two possible causes of your problems. Firstly low system voltage, commonly caused by the state of charge of the battery being less than 70%. It can also be caused by poor earth connections between the battery negative and the main chassis earth point. The second possible problem on a 2015 Mondeo would be a faulty ABS wheel sensor which causes the vehicle not to be able to accurately detect the speed of each wheel.

You need to use a multimeter and measure the battery voltage directly on the terminals. Do this approximately 1 hour after the vehicle has been parked. I'll attach a SOC table below, but if your voltage is less than 70% then you need to charge the battery for at least 12 hours with a Smart battery charger. Remember to connect the charger leads with the positive directly to the battery terminal and the negative to the chassis earth point, NOT to the battery negative.

If your battery voltage is correct then you need to use FORScan on a windows laptop and read the stored diagnostic trouble codes (DTC's) don't use a generic code scanner as they don't read all of the Ford specific codes. It will be able to determine if you have a ABS wheel sensor fault, and which wheel it is.

I will try all that you've sugested and revert

On 5/15/2024 at 9:13 PM, Adeleke said:

I will try all that you've sugested and revert

@unofixI have changed the left ABS sensor but the issue still persist. I have ordered the sensor for the driver side and will get it fixed this weekend... I will keep you posted on the update

On 5/14/2024 at 3:52 PM, unofix said:

you need to use FORScan on a windows laptop and read the stored diagnostic trouble codes (DTC's) don't use a generic code scanner as they don't read all of the Ford specific codes. It will be able to determine if you have a ABS wheel sensor fault, and which wheel it is.

Have you used FORScan to see if it is the ABS sensor ?

There is one on each wheel so guessing gets expensive and your still going to need to use FORScan to clear the DTC.

On 5/22/2024 at 5:55 PM, unofix said:

Have you used FORScan to see if it is the ABS sensor ?

There is one on each wheel so guessing gets expensive and your still going to need to use FORScan to clear the DTC.

@unofix I have fixed the right front sensor and every thing seems to be fine...  My car is back to normal and runs well... Thank you so much for this information.