Complete ABS Pumps – Hydraulic Unit and ABS Control Module

Complete ABS Pump – Hydraulic Unit and Electronic Controller

A complete ABS pump is a mechatronic braking-system assembly that normally combines the hydraulic section with an electronic ABS control unit. Depending on the vehicle, the same assembly may also support ESP, ASR, EDS, traction-control and other stability-related functions.

The complete unit may contain:

• hydraulic valve block,
• electric pump motor,
• solenoid valves,
• electronic ABS / ESP control module,
• electrical connectors and internal sensors depending on system design.

For accurate identification, it is important to distinguish between the complete ABS assembly, hydraulic pump number and electronic controller number.

Complete ABS pump vs ABS electronic control unit

A complete ABS pump is not the same as the electronic controller alone.

The ABS / ESP / ASR control unit is the electronic part of the system. The complete ABS pump normally includes this controller together with the hydraulic block and pump section.

Before ordering, determine whether the vehicle requires:

• only the electronic ABS controller,
• only a specific hydraulic component,
• or the complete ABS pump and control unit assembly.

How to choose the correct complete ABS pump

The safest method is to compare all numbers shown on the original unit.

Check:

• vehicle OEM number,
• hydraulic pump or valve-block number,
• ABS electronic control unit number,
• manufacturer references such as Bosch or ATE,
• all suffix letters and digits,
• additional HW / SW numbers where present,
• vehicle model and production year as supporting information.

A partial number match should not be treated as proof of compatibility. Two ABS assemblies may look almost identical while containing different hydraulic configurations or electronic versions.

Bosch complete ABS pumps

Bosch is one of the main manufacturers of ABS and ESP systems found in the Auto24Parts catalogue.

Depending on the generation, a Bosch ABS assembly may contain several different numbers. Common examples include:

• hydraulic or pump numbers beginning with 02652...,
• electronic controller numbers beginning with 02659...,
• older electronic references from families such as 027300...,
• vehicle-specific OEM numbers.

These number families are useful for identification, but the complete reference must always be checked.

Ford ABS pump – 0265242235 / BK21-2C405-AE / 0265956061

One example is the Ford ABS pump and control module 0265242235 / BK21-2C405-AE / 0265956061.

The main references are:

• 0265242235,
• BK21-2C405-AE,
• BK212C405AE,
• 0265956061.

The Ford engineering suffix AE is part of the complete reference. A visually similar unit with another suffix should not automatically be considered interchangeable.

Ford BK21-2C405-AE and BK21-2C405-AF

The catalogue also contains a closely related Ford unit with numbers 0265243335 / BK21-2C405-AF / 0265956061.

Compare:

• BK21-2C405-AE / 0265242235,
• BK21-2C405-AF / 0265243335.

Although the electronic reference may be similar, the complete pump and OEM numbers differ. This is why all markings should be compared rather than relying on one number.

More Ford units can be found in the Ford ABS pump category.

Audi ABS pump – 0265225239 / 8E0614517Q / 0265950106

Another example is the Audi ABS pump 0265225239 / 8E0614517Q / 0265950106.

The complete set of useful references includes:

• 0265225239,
• 8E0614517Q,
• 8E0 614 517 Q,
• 0265950106.

For this type of Bosch system, searching simultaneously by the Audi OEM number and Bosch numbers significantly reduces the risk of selecting the wrong version.

Browse more examples under Audi ABS pumps.

ATE complete ABS pumps

ATE is another major supplier of ABS and stability-control systems.

ATE units frequently carry several separate references. In many systems, numbers from families such as 10.02... can appear on the hydraulic section while 10.09... references are associated with the electronics. This should be treated as an identification pattern rather than a universal rule for every ATE system.

The entire set of numbers should always be compared.

Audi Q7 – 4L0614517E / ATE 10.0212-0014.4

A good ATE example is the Audi Q7 ABS pump 4L0614517E / ATE 10.0212-0014.4 / 10.0926-0305.3.

The unit carries several important references:

• 4L0614517E,
• 4L0 614 517 E,
• 10.0212-0014.4,
• 10021200144,
• 10.0926-0305.3,
• 10092603053,
• 10061332933.

This is a good example of why one ATE number alone may not be sufficient to identify the complete assembly.

Volkswagen / Audi / Seat / Skoda – 1K0614517BG

Another ATE unit in the catalogue is the ABS pump 1K0614517BG / 25.0212-1540.4 / 1K0907379AH used in selected Volkswagen Group vehicles.

Important references include:

• 1K0614517BG,
• 25.0212-1540.4,
• 25021215404,
• 1K0907379AH.

Again, the suffix BG or AH is part of the complete part number and should not be ignored.

BMW complete ABS pumps

The BMW ABS pump category contains multiple Bosch and other OEM assemblies with BMW-specific numbers.

Examples include:

• 0265225005 / 6757593 / 0265950002,
• 0265225009 / 6755074 / 0265950004,
• 0265250211 / 3451 6774992-01 / 0265960326,
• 0265244088 / 3451685563601 / 0265956111.

The BMW number and Bosch numbers should be checked together before ordering.

Mercedes-Benz ABS pumps

The Mercedes-Benz ABS pump category also contains several different generations and number families.

Examples in the catalogue include:

• A0004465089 / 0265224067 / 0265900034 – Mercedes-Benz Sprinter,
• A0054319712 / 0265250111 / 0265960035,
• A0054315012 / 0265250082 / 0265960023,
• A0014462789 / 0265235288 / 0265950669.

A Mercedes OEM number beginning with A... should be compared together with the complete Bosch reference where available.

ABS pump categories by vehicle brand

If you already know the vehicle make, you can narrow the catalogue using the dedicated ABS pump categories:

• Audi ABS Pumps
• BMW ABS Pumps
• Ford ABS Pumps
• Mercedes-Benz ABS Pumps
• Volkswagen ABS Pumps
• Skoda ABS Pumps
• Seat ABS Pumps
• Toyota ABS Pumps
• Renault ABS Pumps
• Suzuki ABS Pumps

Common symptoms of an ABS pump or control unit problem

Possible symptoms may include:

• ABS warning light,
• ESP or traction-control warning light,
• ABS / ESP system unavailable message,
• loss of communication with the ABS controller,
• internal pump-motor or valve-control fault codes,
• intermittent operation,
• hydraulic or pressure-related faults,
• stored electronic controller errors.

These symptoms do not automatically confirm a faulty ABS pump. Wheel-speed sensors, wiring, power supply, wheel bearings, steering-angle sensors or other vehicle systems can produce similar warnings.

ABS warning light – what should be checked first?

Before replacing the complete ABS unit, diagnostic checks may include:

• wheel-speed sensors,
• sensor wiring and connectors,
• power supply and ground connections,
• fuses and relays,
• CAN communication,
• ABS pump motor supply,
• hydraulic pressure-related faults,
• steering-angle or pressure sensors where applicable.

Reading diagnostic fault codes and live values can help determine whether the problem is located in the hydraulic unit, electronic controller or elsewhere in the vehicle.

No communication with the ABS pump

Loss of diagnostic communication can indicate an internal electronic fault, but vehicle-side electrical problems should also be ruled out.

Check:

• constant power supply,
• ignition supply where applicable,
• ground connections,
• ABS-related fuses,
• connector condition,
• damaged or corroded pins,
• vehicle communication wiring.

Does a replacement ABS pump require coding?

Not every ABS pump uses the same replacement procedure.

Depending on the vehicle and ABS generation, installation may require:

• coding or variant coding,
• transfer of configuration,
• basic settings,
• steering-angle sensor calibration,
• pressure-sensor calibration,
• adaptation of other system parameters,
• diagnostic confirmation after installation.

Other systems may require fewer procedures. It should therefore not be assumed that every used ABS pump must be coded to the VIN.

Does the brake system need bleeding after ABS pump replacement?

Replacing a complete hydraulic ABS assembly normally requires opening the brake hydraulic circuit, so the system must be correctly filled and bled according to the vehicle manufacturer's procedure.

On some vehicles, standard bleeding is supplemented by a diagnostic procedure that activates the ABS pump and internal solenoid valves to remove trapped air from the hydraulic unit.

The exact procedure depends on the vehicle and ABS system.

ABS pump number vs ABS controller number

A common mistake is searching using only one number from the assembly.

For example, a Bosch unit may contain:

• a hydraulic pump number such as 0265225239,
• an Audi OEM number such as 8E0614517Q,
• an electronic controller number such as 0265950106.

These numbers describe different identification layers of the same complete assembly. Comparing all of them gives a much stronger compatibility check.

How to search for a complete ABS pump by part number

Useful search combinations include:

• ABS pump 0265242235 BK21-2C405-AE 0265956061,
• Ford ABS pump BK212C405AE,
• Audi ABS pump 0265225239 8E0614517Q 0265950106,
• Audi Q7 ABS pump 4L0614517E 10021200144,
• ATE ABS pump 10.0212-0014.4 10.0926-0305.3,
• VW Audi Seat Skoda ABS pump 1K0614517BG 1K0907379AH,
• BMW ABS pump 0265250211 6774992 0265960326,
• Mercedes Sprinter ABS pump A0004465089 0265224067.

Searching with both the OEM and manufacturer numbers normally gives much more precise results than using only the vehicle model.

Selected complete ABS pumps

For Ford applications, one example is the 0265242235 / BK21-2C405-AE / 0265956061 ABS pump.

For Audi, the catalogue includes the 0265225239 / 8E0614517Q / 0265950106 Bosch assembly as well as the Audi Q7 4L0614517E / ATE 10021200144 / 10092603053 pump.

Volkswagen Group applications also include the 1K0614517BG / 25021215404 / 1K0907379AH ABS pump and controller.

Related electronic and braking categories

• Electronic Car Parts
• ABS / ESP / ASR Electronic Control Units
• Bosch Automotive Electronics
• ATE ABS Components

How to confirm ABS pump compatibility before ordering

If you are unsure which complete ABS pump is correct, contact Auto24Parts.

For compatibility verification, send clear photos showing:

• the complete ABS pump label,
• hydraulic unit number,
• electronic controller number,
• vehicle OEM reference,
• all suffix letters and additional markings.

Also provide the vehicle make, model, production year and engine version if known.

The complete combination of numbers from the original ABS assembly is the safest basis for selecting a replacement.

Ordering, Payment, Delivery and Returns

Information about ordering is available in our How to Buy guide. Payment options are listed under Secure Payment Methods, while shipping information can be found on the Shipping & Delivery page.

Current information about returns, complaints and warranty is available under Returns, Warranty & Complaints.

FAQ – Complete ABS Pumps