Looking for a Mercedes-Benz ABS pump, ESP control module, ABS hydraulic unit, SBC brake pump or complete ABS/ESP unit?
Mercedes-Benz vehicles use sophisticated electronic braking systems incorporating ABS (Anti-lock Braking System), ESP (Electronic Stability Program), BAS (Brake Assist System) and, on certain models, SBC (Sensotronic Brake Control).
A faulty ABS/ESP hydraulic unit or electronic module can cause ABS, ESP, BAS and brake warning messages, pump motor faults, pressure sensor faults and communication errors.
At AutoPulse247, we supply genuine used OEM Mercedes-Benz ABS pumps, ESP modules, hydraulic control units and SBC brake units.
Our stock may include ABS/ESP units for:
Mercedes-Benz A-Class, B-Class, C-Class, CLA, CLS, CLK, E-Class, S-Class, SL, SLK/SLC, GLA, GLB, GLC, GLK, GLE, ML, GLS, GL, Vito, Viano, V-Class, Sprinter and other Mercedes-Benz models.
Different ABS/ESP units may be installed within the same model range, so always compare the complete part numbers before purchasing.
A faulty Mercedes ABS pump or ESP module may cause:
The exact symptoms depend on the Mercedes chassis, production year and braking system fitted.
Mercedes uses manufacturer-specific diagnostic codes as well as standard C- and U-codes. Exact definitions can vary by chassis and ABS/ESP generation.
Commonly encountered ABS/ESP fault areas include:
C0031 / C0034 / C0037 / C003A – Wheel Speed Sensor Circuit Faults
Usually associated with wheel speed sensors, wiring, connectors or wheel bearing encoder rings rather than the ABS pump itself.
C0110 – ABS Pump Motor Circuit Fault
Can indicate a hydraulic pump motor, electrical supply, wiring or internal ABS unit problem on applicable systems.
C0121 – ABS Valve / Relay Circuit Fault
May indicate an electrical or internal hydraulic control unit problem.
C0131 – Brake Pressure Sensor / ABS Pressure Circuit Fault
Can relate to brake pressure measurement, wiring or an internal hydraulic unit problem depending on the system.
C1110 – ABS Hydraulic Pump / Pump Motor Fault
On applicable systems, may indicate a problem with ABS pump operation or its electrical circuit.
C1140 – Steering Angle Sensor / ESP Signal Fault
Often associated with steering angle information required by the ESP system. This does not automatically mean the ABS pump is defective.
C1401 – ABS / ESP Hydraulic Pump Related Fault
Depending on the Mercedes system fitted, this may relate to hydraulic pump operation or its electrical circuit.
U0121 – Lost Communication With ABS Control Module
Communication with the ABS/ESP control module has been lost. Possible causes include power supply, wiring, CAN Bus or internal control module failure.
U0415 – Invalid Data Received From ABS Control Module
Another control module has detected invalid information originating from the ABS/ESP system.
Mercedes-specific diagnostic equipment such as Xentry/STAR may display additional manufacturer-specific codes and descriptions.
Certain Mercedes-Benz models use SBC – Sensotronic Brake Control.
SBC systems are particularly associated with some generations of:
Mercedes E-Class W211 / S211
Mercedes CLS C219
Mercedes SL R230
Depending on model and production year, SBC-related symptoms may include:
Messages such as “Brake Defective – Stop Vehicle” or “Service Brake – Visit Workshop” require proper diagnosis and should not simply be treated as confirmation that the SBC unit needs replacing.
SBC diagnostic codes vary by unit and vehicle. Commonly encountered diagnostic areas include:
C249F – SBC Service Threshold / Operating Time Reached
A well-known SBC-related diagnostic fault. Correct diagnosis of the SBC system is required before deciding whether repair or replacement is appropriate.
Other SBC faults may relate to:
Because SBC is an electronically controlled braking system, diagnosis and replacement should be performed using suitable Mercedes-compatible diagnostic equipment.
Not necessarily.
Mercedes ABS and ESP warning messages can also be caused by:
These should be checked before replacing the ABS/ESP unit.
If diagnostics confirm an internal control module, hydraulic pump, pump motor, pressure sensor or hydraulic unit failure, replacement or specialist repair may be required.
A Mercedes ABS/ESP assembly can contain several components:
ABS/ESP Hydraulic Block – regulates hydraulic pressure to individual brakes.
ABS Pump Motor – generates hydraulic pressure when required.
ESP Electronic Control Module – processes wheel speed, steering, yaw and other information and controls ABS/ESP functions.
SBC Hydraulic Unit – on applicable vehicles, provides electronically controlled hydraulic braking functions.
Depending on the fault, replacement of an individual component or the complete assembly may be required.
Do not select an ABS/ESP unit based only on:
Mercedes model + engine + production year.
Mercedes frequently uses multiple ABS versions within the same model.
Mercedes OEM numbers commonly appear in formats such as:
A 000 431 xx xx
A 003 431 xx xx
A 004 431 xx xx
A 005 431 xx xx
A 006 431 xx xx
A 007 431 xx xx
A 008 431 xx xx
A 009 431 xx xx
Other ABS/ESP generations use different Mercedes numbering ranges.
The unit may also carry Bosch, ATE/Continental or other manufacturer numbers.
Always compare the complete Mercedes OEM number and manufacturer number, including all suffixes and revisions.
Two ABS units can look identical but have different electronics, hydraulic configurations, software or vehicle applications.
A replacement Mercedes ABS/ESP module may require:
Coding requirements depend on the vehicle and ABS/ESP generation.
AutoPulse247 supplies genuine used OEM Mercedes-Benz ABS pumps, ESP control modules, hydraulic units and SBC brake units.
Search our store using your:
Mercedes-Benz OEM part number, Bosch number, ATE/Continental number, ABS pump number, ESP module number or SBC part number.
Matching the complete numbers from the original unit is the safest way to identify a compatible replacement.
Send us:
Your Mercedes VIN + ABS/ESP/SBC fault codes + complete part number + a clear photograph of the original unit label.
We can use these details to help identify a suitable replacement from our available stock.
Important: ABS, ESP, BAS and SBC fault codes are provided for general diagnostic information. Code definitions can vary between Mercedes-Benz chassis and braking-system generations. A fault code does not automatically confirm that the ABS/ESP/SBC unit is defective. Braking-system faults should be correctly diagnosed before replacement.
