Mercedes Electric Power Steering Rack Repair
Repair, reconditioning and reconditioned rack sales — supplied, fitted or delivered UK-wide.
Mercedes EPS Rack Repair Specialists
Pro Power Steering provides Mercedes EPS rack repair, assessment and reconditioning for applicable cars and vans with electromechanical power steering. Customers can also buy a suitable reconditioned replacement rack from us for supply, workshop fitting or arranged UK delivery.
Mercedes steering systems differ by model, generation, drivetrain and equipment. Standard electromechanical steering, Direct-Steer, speed-sensitive assistance, rear-axle steering and driver-assistance functions must not be treated as the same component. We identify the vehicle and original rack before confirming repairability, compatibility or price.
Request a Mercedes EPS Rack Quote
Whether you want your original rack repaired or need to buy a reconditioned replacement, send the registration or VIN, exact model and year, drivetrain and steering options, the complete dashboard message, all diagnostic codes with status information, and clear photographs of the rack label or part number.
Buy a Reconditioned Mercedes Electric Steering Rack
Pro Power Steering does more than refurbish customers’ original units. We also sell reconditioned Mercedes electric steering racks for suitable applications. Stock, exchange terms and compatibility depend on the original part number, steering option and vehicle specification.
Rack supply
Buy a reconditioned Mercedes EPS rack from us, subject to correct identification and current availability.
Supply and fitting
Where suitable, our workshop can supply and fit the rack and discuss the required setup or calibration work.
UK delivery or collection
Part-only UK delivery or collection from our workshop can be arranged for suitable steering units.
Send the registration or VIN and a clear photograph of the original rack number so we can check the correct unit, price, exchange requirements and availability.
Mercedes Models With Electric Steering Rack Applications
We can assess applicable electric steering systems from the following Mercedes-Benz model families. Coverage varies within each range, so the VIN, steering equipment and original part number must be checked before a repair or replacement rack is confirmed.
A-Class, B-Class, CLA and compact SUVs
Applicable systems across relevant A-Class, B-Class, CLA, GLA and GLB generations, including 4MATIC and suitable Mercedes-AMG variants.
C-Class and GLC
Electric steering rack applications for relevant C-Class saloon, estate, coupé and cabriolet models, plus GLC SUV and Coupé derivatives.
E-Class and CLS
Applicable newer E-Class saloon, estate, coupé and cabriolet systems, together with relevant CLS and Mercedes-AMG variants.
S-Class, SL and AMG GT
Applicable front electric steering systems for relevant newer S-Class, SL and Mercedes-AMG GT models. Rear-axle steering is a separate system where fitted.
GLE and GLS
Electric steering applications for relevant newer GLE and GLS SUVs and coupés, including 4MATIC, AMG Line and suitable Mercedes-AMG derivatives.
EQ models, Sprinter, Vito and V-Class
Applicable steering systems for EQA, EQB, EQC, EQE and EQS families, plus relevant newer Sprinter, eSprinter, Vito, eVito and V-Class applications.
Common Mercedes EPS Symptoms We Can Assess
- Heavy steering or complete loss of power assistance
- “Power steering malfunction” or assistance warning
- Assistance unavailable at start-up or returning after a restart
- Intermittent assistance or steering that changes in weight
- Knocking, play, creaking or mechanical rack noise
- Notchy, uneven or binding steering with no stored fault code
- Water ingress, corrosion or damaged rack connections
- Warnings after battery, alignment, suspension or steering work
If steering assistance is reduced or unavailable, the vehicle can require substantially more effort to steer. Stop using the vehicle if it is unsafe and arrange professional diagnosis or recovery.
Battery voltage, power and earths
Low starting voltage, an unstable charging supply, poor earths, fuses or damaged power connections can cause steering warnings and communication faults. These checks should be completed before the rack is condemned.
Mechanical noise without a code
A rack can knock, creak, bind or develop play without storing an electronic fault. Inner joints, mountings, the steering column and nearby suspension components must also be inspected.
Steering and driver-assistance systems
A front EPS rack fault is not the same as a warning from Active Steering Assist, lane-keeping equipment or rear-axle steering. The exact module and complete scan are important.
Mercedes EPS Fault Codes and Code Families
Send a complete XENTRY or equivalent diagnostic report, including control unit N68 where applicable, the full code, description, status, frequency and freeze-frame information. The examples below appear in Mercedes-Benz service information, but the correct route depends on model series, software level, Mon_ID or sub-fault data and the guided XENTRY test. A code alone does not prove that the steering rack must be replaced.
| Code or code family | What it can indicate | What should be checked |
|---|---|---|
| P063500 | Electric power steering malfunction. On specified model series Mercedes-Benz has documented a no-assistance-at-start condition caused by EPS control-unit software. | Record the Mon_ID/root-cause data and exact vehicle application. Complete the XENTRY guided check and verify N68 software before deciding that hardware is defective. |
| P063547 / P063509 | Runtime or related electric-power-steering malfunction entries documented with start-up loss of assistance on certain newer Mercedes applications. | Capture the complete freeze-frame and Mon_ID values. Check voltage and software status and follow the vehicle-specific XENTRY procedure. |
| P063544 | Data-memory fault that can be stored after flashing or initialising N68 on specified models, sometimes without a warning or functional restriction. | Check the status and Mon_ID. Mercedes service information identifies documented cases where the stored entry can be cleared and rack replacement is unnecessary. |
| P063507 + sub-fault 50009 | Mechanical-fault entry with blocking/freezing detection documented on certain applications; possible causes include water entry through a damaged steering-gear boot or software level. | Inspect both boots and the gear for water or damage, record the sub-fault data and confirm software status. Follow XENTRY guidance before agreeing replacement. |
| Communication and voltage codes | CAN interruption, low supply voltage, power or earth faults can create steering warnings or unavailable assistance without proving internal rack failure. | Send the complete vehicle scan and test the battery, charging supply, fuses, power, earths, connectors and network communication. |
| No stored steering DTC | Mechanical wear, knocking, play, stiffness, binding or notchy steering may be present without an electronic code. | Inspect the rack mechanically and rule out inner joints, mountings, the steering column and nearby suspension components. Send a symptom description or video. |
No Mercedes EPS Fault Code but a Noisy Rack?
This is possible. Diagnostic trouble codes are generated for conditions monitored by the control modules; they do not identify every worn guide, bush, inner joint, mounting point or other mechanical source of noise and play.
If the steering knocks, creaks, feels loose, binds or becomes notchy while the scan remains clear, describe when it happens—for example while parking, changing direction, crossing uneven surfaces or turning near full lock.
A Mercedes Fault Code Is Not a Complete Diagnosis
Mercedes diagnostic records can include fault status, frequency, mileage, voltage and surrounding operating conditions. Low voltage, coding, calibration, wiring, communication, alignment and other vehicle conditions can create steering warnings without proving an internal rack failure.
Our approach: we match the symptoms and diagnostic information to the vehicle and original rack, review the electrical and mechanical evidence, and explain the appropriate assessment step before Mercedes EPS rack repair or reconditioning is agreed.
How Mercedes Electric Rack Repair and Reconditioning Works
Identify
We check the registration or VIN, generation, steering options and original rack number.
Assess
The symptoms, diagnostic report, electrical checks and mechanical condition are reviewed.
Repair and Recondition
Suitable original units are repaired or reconditioned using the agreed process for that application.
Test and Return
The unit is checked before workshop fitting, collection or arranged return delivery.
Information Needed for an Accurate Mercedes EPS Quote
Vehicle details
- Registration or full VIN
- Exact Mercedes model, generation and year
- Engine or electric derivative and drivetrain
- Direct-Steer, rear-axle steering or relevant steering options
Rack and diagnostic details
- Clear photograph of the rack label and part number
- Exact warning message and complete Mercedes fault codes
- Description of when the fault or noise occurs
- Recent battery, coding, alignment, suspension or steering work
Mercedes Electric Power Steering FAQs
Do all Mercedes models use the same electric steering rack?
No. Steering type, rack generation and equipment vary by model, year and specification. The VIN and original rack number must be checked.
Can you repair my original Mercedes steering rack?
Many suitable units can be assessed for repair or reconditioning, but the rack must be identified and its condition considered before work is confirmed.
Can I buy a reconditioned Mercedes EPS rack?
Yes, for suitable applications and subject to stock. Send the VIN and original rack number so we can check supply, exchange terms and price.
Does a Mercedes steering warning always mean the rack has failed?
No. Voltage, wiring, communication, coding, calibration, alignment and other vehicle conditions can produce steering warnings. A proper diagnosis is essential.
Can a Mercedes rack be mechanically noisy without a fault code?
Yes. Electronic diagnostics do not detect every worn mechanical component. The rack and nearby steering and suspension parts should be inspected.
Will the Mercedes need coding or calibration?
Depending on the model and work completed, steering-angle calibration, end-stop learning, coding, alignment or other setup may be required. This is confirmed for the individual vehicle.
Related Steering Services
Repair Your Rack or Buy a Mercedes EPS Rack
For Mercedes EPS rack repair, reconditioning, replacement rack sales or workshop fitting, send the VIN, model details, diagnostic report and original rack number. We will check the application before confirming the next step.
