Ford Fiesta, B-Max and Transit Connect ABS fault – brakes locking on
Is your Ford Fiesta, B-Max or Transit Connect experiencing brakes binding or locking on after releasing the brake pedal? This compromises braking performance and is a common fault on these models fitted with the MK100 ABS unit.
Resolve Ford Transit Brakes Locking On
Many Ford drivers first notice the issue when the brakes on their Fiesta, B-Max, or Transit Connect remain applied or locked on, particularly at low speeds or when pulling away again. This is commonly caused by an internal fault within the ABS unit fitted to Ford vehicles, such as the second generation Ford Transit Connect (2012-2019) or sixth generation Ford Fiesta (2008-2017).
How does the ABS unit affect braking on Ford models?
This fault is commonly associated with vehicles fitted with the ATE MK100 ABS unit, which is widely used across several Ford models. The ABS unit regulates hydraulic braking pressure using the motor, hydraulic block, and control module. In affected vehicles, such as the Ford Fiesta, B-Max, or Transit Connect, when this ABS unit becomes faulty, it no longer regulates pressure correctly and causes the brakes to lock on.
Why are my Ford Fiesta, B-Max or Transit Connect brakes locking on?
Internal faults within the MK100 ABS unit develop over time and prevent brake pressure from releasing correctly. When this occurs, braking force remains applied even after the driver releases the brake pedal.
The MK100 ABS unit controls multiple hydraulic circuits that supply braking pressure to specific wheels. When this internal fault occurs, brake pressure can remain applied to the affected wheel, causing it to bind. Where the fault affects a shared hydraulic circuit, pressure may remain applied to multiple wheels at the same time.
When this residual pressure remains in the system, it causes the brakes to bind or become locked on, as seen on the Ford Fiesta, where the fault is often misdiagnosed as a sticking caliper despite originating within the ABS unit.
Is an ABS unit replacement necessary?
To resolve brake binding, a brand new replacement ABS unit is often recommended. While a replacement can restore braking functionality temporarily, these units are built to the same original specifications, meaning they are prone to malfunction over time.
Replacement ABS units are usually supplied as a complete assembly. However, as seen on vehicles such as the Ford Transit Connect and Fiesta, faults causing brakes to lock on often originate from a specific internal section of the ABS unit rather than the assembly as a whole. As a result, replacing the full unit can be an extortionate and unnecessary cost.
Our solution
We offer a cost-effective and reliable alternative. We professionally test and rebuild your original ABS unit, completed in just 2-3 working days and supplied with a lifetime warranty.
Rather than simply replacing the unit, our rebuild process focuses on restoring correct operation across the entire assembly. It not only removes the defect but prevents it from developing again in the future. Each unit is carefully tested and rebuilt utilising higher-than-OEM-standard components to improve long-term reliability and deliver consistent braking system operation beyond standard replacement. Complete this test form to have your unit fully remanufactured.
Test and rebuild:
Each Ford ABS unit is tested before and after the rebuild using our HIL (hardware-in-the-Loop) test rigs to confirm the fault and verify correct operation. During the rebuild, higher-than-OEM-standard components are used where required to restore reliable performance and meet our lifetime warranty standards.
Programming:
No programming is required once the ABS unit is returned. Simply refit the unit and bleed the braking system as part of standard installation.
Quality:
Our rebuild process follows strict quality control, allowing us to confidently offer a lifetime warranty. With a defect rate of 0.49%, we are trusted by main dealers and automotive specialists worldwide.
Warranty:
Lifetime unlimited mileage*
How do I get my unit rebuilt?
To pay for the rebuild click the Shop Now link above, select your part number and click: Get yours rebuilt.
Print the payment/booking confirmation email.
Package the Ford ABS inside a sturdy box with plenty of packaging material and make sure you include your confirmation email in the box.
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received we will test, rebuild and return your ABS with an unlimited mileage lifetime warranty. If your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping.
What if I don’t want to pay up front?
This is not a problem, if you prefer this option then follow these steps:
Fill in and submit this test form.
Print the booking confirmation email.
Package the ABS pump inside a sturdy box with plenty of packaging material and make sure you include your confirmation email in the box.
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received, we will test your unit and call to inform you of the outcome of testing. If your ABS unit is faulty and you choose to go ahead with the rebuild, then we will take payment over the phone using a debit/credit card.
We will then rebuild your ABS pump and return it to you with an unlimited mileage warranty.
If you require further information regarding this Ford B-Max, Fiesta, Transit Connect ABS unit, then please contact us.