Mercedes-Benz W221 Air Conditioning Control Module - Used Original Parts

Description

Product Title

Mercedes-Benz W221 Air Conditioning Control Module - Used Original Parts

Diagnosis and Common Symptoms

From a technician's perspective, diagnosing a faulty A/C control module on a W221 chassis involves observing specific electronic and mechanical failures. The primary complaint is often a complete loss of climate control or erratic behaviour that cannot be attributed to refrigerant levels or mechanical components like the compressor or blend door actuators. A diagnostic scan will frequently reveal "No Communication" with the N22/7 (Automatic air conditioning control unit) or specific fault codes pointing to internal electronic failure.

Common symptoms include:

• Blower motor fan is completely unresponsive or stuck on a single speed.
• Temperature control is non-functional; air blows only hot or only cold.
• Air distribution flaps (vents) do not change when selected (e.g., stuck on defrost or face vents).
• Buttons on the control panel are unresponsive or intermittently working.
• The "A/C" or "A/C OFF" light flashes or does not illuminate.
• Dashboard error messages related to climate control or HVAC system failure.

Introduction

When the sophisticated climate system in your S-Class fails, restoring its function with a Genuine Mercedes-Benz part is the only correct procedure. This is a Genuine Used Air Conditioning Control Module, carefully salvaged from a donor W221. Each unit has been bench-tested by our technicians to ensure all core functions—from button response to signal outputs—are fully operational, providing a reliable and cost-effective alternative to a new dealership part.

Product Details

• Brand: Mercedes-Benz

• Model Compatibility: W221 S-Class (2005-2013) including S350, S400, S500, S550, S600, S63/S65 AMG

• Part Name: Air Conditioning Control Module / HVAC Control Unit

• Condition: Genuine Used (Tested Working)

• Notes: Critical that you match the part number from your original unit to the one listed in this advertisement to ensure full compatibility with your vehicle's specific options.

Frequently Asked Questions

Q: What symptoms indicate failure? A: Common indicators include an unresponsive blower fan, inability to control temperature or air direction, non-working buttons on the control panel, or diagnostic fault codes pointing to an internal module error.

Q: Does this require coding? A: Yes, in most cases. Mercedes-Benz modules are often coded to the vehicle's specific equipment and VIN. This unit will likely require SCN or variant coding using specialized diagnostic tools (like XENTRY/DAS) to synchronize with your car and ensure all functions operate correctly.

Q: Is this original? A: Yes, this is a 100% Genuine Mercedes-Benz component, carefully removed from a W221 vehicle. It is not an aftermarket or replicated part.

Why Choose Us?

• Verified functionality
• Actual photos/videos provided
• 30-day exchange warranty
• Core command signals and CAN-Bus communication verified on-bench

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