Mercedes-Benz W211 Brake Servo Master Cylinder - Used Original Parts

Description

Product Title

Mercedes-Benz W211 Brake Servo Master Cylinder - Used Original Parts

Diagnosis and Common Symptoms

From the workshop floor, the most common failure point on the pre-facelift W211 and R230 chassis is the Sensotronic Brake Control (SBC) hydraulic unit. The system is designed with a pre-programmed service life, measured by brake pedal actuations. Once this internal counter reaches its limit, the control module triggers a fault to ensure safety.

Common Dashboard Warnings:

• "Brake Defective Stop Vehicle!" (Red warning)
• "Service Brake! Visit Workshop!" (White warning)

Diagnostic Trouble Codes (DTCs):

• C249F: CHECK OPERATING TIME OF COMPONENT A7/3 (SBC HYDRAULIC UNIT) - This is the most prevalent code, indicating the service threshold has been reached.
• Other pressure-related faults logged in the SBC module.

Physical Symptoms:

• A hard, unresponsive brake pedal with significantly reduced braking power as the system reverts to a basic hydraulic backup mode.
• Audible buzzing from the pump running longer than usual.

Introduction

This is a Genuine Mercedes-Benz SBC hydraulic unit, carefully removed from a donor vehicle. We understand the critical nature of this component, which is why each unit undergoes a comprehensive diagnostic evaluation to verify its operational pressure and, most importantly, to ensure its internal service counter has substantial life remaining. This provides a reliable, workshop-tested solution without the expense of a brand-new component.

Product Details

• Brand: Mercedes-Benz / Bosch
• Model Compatibility: Mercedes-Benz E-Class (W211; 2003-2006), SL-Class (R230; 2003-2006)
• Part Name: Sensotronic Brake Control (SBC) Hydraulic Unit / Master Cylinder Assembly
• Condition: Genuine Used (Tested Working)
• Notes: Part number verification is crucial for compatibility. Installation requires a full brake fluid flush and system bleed using Mercedes-specific diagnostic tools (e.g., STAR/Xentry) to correctly deactivate, install, and reactivate the SBC system. The service counter must be reset upon installation.

Frequently Asked Questions

Q: What symptoms indicate failure? A: The primary indicator is the red "Brake Defective Stop Vehicle!" message on your dashboard, often accompanied by fault code C249F. You will also experience a very stiff brake pedal and a severe loss of braking assistance.

Q: Does this require coding? A: It does not require SCN coding like a new unit from the dealer. However, it absolutely requires professional installation using a Mercedes-compliant diagnostic tool to perform the bleed procedure, adaptations, and reset the service life counter in the vehicle's control module.

Q: Is this original? A: Yes, this is a Genuine Mercedes-Benz part, manufactured by Bosch. We do not deal with aftermarket replicas for critical safety systems, as they often fail to communicate correctly with the vehicle's network and compromise safety.

Why Choose Us?

• Verified functionality
• Actual photos/videos provided
• 30-day exchange warranty
• Each unit's activation counter is checked to ensure significant service life remains.

Shipping

Location: Kuala Lumpur, Malaysia Shipping: West Malaysia RM50 (Estimate) / East Malaysia RM80 (Estimate) Delivery: 1-2 working days Packaging: Secure anti-static packaging, heavy-duty shock absorption. (We send actual photos/videos of the unit and packaging before shipping)

Warranty and Return Policy

• 30-day exchange warranty from the date of receipt.
• Proof of professional installation by a qualified workshop is required for warranty claims.
• No returns if the item is opened, modified, tampered with, or damaged due to incorrect electrical wiring.
• Exchange only for confirmed internal electronic defects.

How to Order

1. WhatsApp us to confirm compatibility with your specific VIN.
2. Send your chassis number or a clear photo of your old unit label.
3. Confirm order details and stock availability.
4. Receive actual product photos and diagnostic test confirmation.
5. Make payment via bank transfer.
6. Item is shipped immediately with tracking details provided.

Contact Us

Ready to order or have questions? Tap the WhatsApp button to chat with our team directly.

Price Notice

Price is estimated only. Actual price depends on current stock levels, specific part number revisions, and unit condition. Please WhatsApp us for a formal quote.

Compatible Models