BMW E39 ABS Pump & Module Repair

If your BMW E39 has an ABS light on and a wheel speed sensor code stored, it’s likely your ABS module is faulty and in need of repair. This isn’t unusual and failure is spread across two commonly-failing ABS modules fitted to the E39 (1995-2004).

BMW E39 ABS Pump & Module Repair

When failure strikes, affected owners will be left with unassisted braking as well as an illuminated ASC or DSC light. Scanning the vehicle diagnostically will usually uncover wheel speed sensor codes, or in BMW E39s with DSC, the defective ABS module may store pressure-sensor-related codes.

Thankfully though, we’re the experts at restoring full functionality to these control units in just 2-3 working days. Complete our test form to get started.

Which BMW E39 ABS module do I need a repair of?
As mentioned, BMW fitted two different ABS modules to their E39 model, and unfortunately, the pair of them fail frequently and require a repair.

It’s fairly unusual for the same model to run two different ABS units, however, the reason for this was to support the specific model’s stability system. In 1998, BMW began transitioning from ASC (automatic stability control) to DSC (dynamic stability control), and the E39 was very much a part of this development.

In short, DSC is a significant advancement of ASC. While ASC only monitors information from the wheel speed sensors to react to wheel spin, DSC consults a range of sensors to predict and mitigate wheel spin. This includes the steering angle sensor, yaw sensor and lateral acceleration sensor, hence why a more sophisticated ABS module was required. 

The Bosch 5.7 accommodated this upgrade, which is why you tend to find it on post-2000 E39 models, and higher spec models like the 535 and 540.

When it comes to lower-spec E39s (520-530), it’s much more common to find the ASC-compliant Bosch 5.7 ASG. Ultimately though, understanding which BMW E39 ABS module you require a repair of, depends on whether your vehicle has ASC or DSC.

BMW E39 ABS pump & module fault explained
The reason these ABS units fail so frequently is due to an internal defect within the ABS module. This issue significantly hinders normal operation and interferes with the module’s ability to process WSS data and communicate via the CAN bus.

This is of course vital to both ASC and DSC functionality. As a precaution, your E39’s ABS module will disable features like ABS and ASC/DSC, meaning your BMW reverts to conventional braking until the unit has been repaired.

Inevitably, this also triggers the ABS and ASC/DSC warning lights to illuminate, signalling to the driver that these systems are no longer functional. 

BMW E39 ABS pump & module fault: repair or replace?
When met with the aforementioned issues, many BMW E39 owners choose to simply replace their defective ABS module with a brand new one. However, this isn’t the most effective solution and we don’t recommend it.

Replacement pump and modules are subject to the very same issues. This is because a brand-new unit is exactly the same internally as your original, inevitably leading to the very same defect developing over time. 

Instead, we recommend having your BMW E39’s ABS pump and module professionally remanufactured.

Our solution
When met with these symptoms, we’d always advise having the unit professionally tested to confirm the fault. We can do this for you using our bespoke hardware-in-the-loop testing rigs. This technology analyses your module under realistic operating conditions to pinpoint hard-to-find faults.

Having confirmed the internal malfunction, we’ll then remanufacture your E39’s control module with higher-than-OEM-standard components, going a step further than standard BMW ABS repair services. We don’t just replace the odd underperforming component to restore functionality, we’ll completely overhaul the module internally to provide long-lasting functionality.

Our solution costs much less than sourcing a replacement pump and module and you won’t need to recode the unit after we’ve rebuilt it. Most repair services provide only a short-term warranty (no more than a couple of years), however we cover all BMW E39 ABS modules rebuilt by us with an unlimited-mileage lifetime warranty.

Don’t just have your ABS pump and module repaired, have it remanufactured by the experts and keep your BMW E39 on the road for good. Fill out our test form to begin. 

Bosch 5.7 ASG

You’ll find these ABS pump and module units on ASC-equipped BMW E39 vehicles, and they typically cause wheel speed sensor codes to store when in need of repair.

Shop Now – BMW E39 ABS Pump & Module Repair

Common failure symptoms:

• ABS warning light on
• Traction warning light on
• ASC warning light on
• Speedometer not working

Common fault codes:

• 31 – Rear Right Wheel Speed Sensor
• 33 – Front Left Wheel Speed Sensor
• 67 – Intermittent Interference

Bosch 5.7

These ABS units are fitted to DSC-equipped models. When defective, the ABS and DSC lights will illuminate and codes will store for wheel speed sensor faults or brake pressure sensor faults.

Shop Now – BMW E39 ABS Pump & Module Repair

Common failure symptoms:

• ABS warning light on
• Traction warning light on
• DSC warning light on
• Brake warning light on
• No communication with ABS unit

Common fault codes: 

• 21 – Left Front Wheel Speed Sensor
• 51 – Pressure Sensor Line
• 58 – DSC Precharge Pump
• 115 – Pressure Sensor Interference

Test and rebuild:
We test all ABS pump and modules on custom-built testing rigs. This allows us to test under realistic conditions and locate hard-to-find faults. We use the very latest remanufacturing equipment and technicians to restore functionality to your unit for good.
 
Programming:
You won’t need to worry about having to recode the unit back to your vehicle, this information is completely preserved throughout the process meaning it’ll be plug-and-play when you receive it back.
 
Quality:
We pride ourselves on providing an exceptional service, this is evidence by our defect rate of just 0.49%. As a result, we are proud to be the chosen provider of automotive remanufacturing services for thousands of industry 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 ABS pump and module 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 unit 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 BMW E39 ABS pump and module 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 ABS module and call to inform you of the outcome of testing. If your 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 unit and return it to you with an unlimited mileage warranty.

If you require further information regarding this BMW E39 ABS pump and module fault then please contact us.