Mercedes-Benz W211 Battery Relay A 002 542 38 19 - Used Original Parts
RM 350
Condition: Used (Original)Description
Product Title
Mercedes-Benz W211 Battery Relay A 002 542 38 19 - Used Original Parts
Diagnosis and Common Symptoms
From the workshop floor, this relay is a frequent culprit behind one of the most common W211 electronic faults. A failure in this component disrupts the dual-battery charging system, leading to a persistent red "Visit Workshop!" warning with a battery icon on your instrument cluster. You will also likely see the "Convenience functions temporarily unavailable" message, as the system shuts down non-essential electronics to preserve starting power. In advanced stages of failure, this can lead to a drained main battery and a no-start condition. Fault codes stored in the Battery Control Module (BCM) will typically point towards an issue with the auxiliary battery circuit or charging system communication.
Introduction
Don't compromise your vehicle's sophisticated electrical system with unproven aftermarket electronics. This is a Genuine Mercedes-Benz battery relay, professionally salvaged and fully tested to ensure it performs to the original factory standard. We've bench-tested this specific unit for correct voltage switching and resistance, guaranteeing it's ready for installation. It is the reliable, cost-effective solution to restore proper function to your vehicle's power management system.
Product Details
- Brand: Mercedes-Benz
- Model Compatibility: W211 E-Class (E320, E350, E500, E55 AMG, etc.). Please verify part number A 002 542 38 19 matches your original unit.
- Part Name: Battery Isolation Relay / Auxiliary Battery Relay
- Condition: Genuine Used (Tested Working)
- Notes: This relay is typically located in the trunk area, mounted near the auxiliary battery. It is responsible for isolating the two batteries and managing the charging sequence.
Frequently Asked Questions
Q: What symptoms indicate failure? A: The primary symptoms are a red battery warning on the dash, a "Convenience functions unavailable" message, and potential issues with the main battery holding a charge.
Q: Does this require coding? A: No. This is a direct-fit, plug-and-play component. It does not require any programming or SCN coding after installation.
Q: Is this original? A: Yes, this is a 100% Genuine Mercedes-Benz part, carefully removed from a donor vehicle. We only supply original parts for critical electronic systems.
Why Choose Us?
- Verified functionality
- Actual photos/videos provided
- 30-day exchange warranty
- Expert diagnosis on all parts to ensure you're fixing the right problem.
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
- WhatsApp us to confirm compatibility with your specific VIN.
- Send your chassis number or a clear photo of your old unit label.
- Confirm order details and stock availability.
- Receive actual product photos and diagnostic test confirmation.
- Make payment via bank transfer.
- 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.
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