Description
Mercedes PLD MR Replacement ECU – Fully Programmed Unit for Sale
Our Mercedes PLD MR replacement service supplies fully programmed engine control modules for MP1, MP2 and MP3 trucks. Each PLD/MR unit is pre-coded to your truck’s VIN, immobiliser and injection setup, giving you a true plug-and-play solution that minimises downtime and avoids expensive dealer programming.
The PLD/MR module is the heart of the Mercedes-Benz electronic diesel system. It manages fuel injection, engine timing, torque limits, emissions, and CAN communication. When this module fails or loses coding, the vehicle may refuse to start, enter limp mode, misfire, or show multiple communication faults.
Our Mercedes PLD MR replacement ECU restores full engine management with a fully configured, ready-to-install unit.
⭐ What Our Mercedes PLD MR Replacement Service Includes
We supply a fully programmed PLD/MR module ready for installation. Using specialised bench equipment, we transfer or recreate all required data, including:
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VIN and immobiliser coding
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Injector and cylinder configuration
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Variant coding and torque settings
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PTO, retarder and exhaust-brake options
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Dashboard and gearbox communication parameters
Every replacement ECU undergoes full functional testing, including injector drivers, 5V/12V sensor supplies, CAN communication and fault-memory verification.
⚠️ Typical Symptoms Requiring PLD MR Replacement
A replacement unit is often necessary when the original module is water-damaged, burnt, corrupted, or no longer communicates. Common symptoms include:
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No communication with diagnostic tools
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Engine cranks but does not start
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Random cutting out or misfire that follows the ECU
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Multiple internal ECU fault codes
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Corrosion on pins or inside the casing
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Damage caused by previous repair attempts
If you’re unsure whether your ECU is repairable, you may send it in for assessment. We will determine whether repair or replacement is the most cost-effective solution.
🚚 Supported Mercedes-Benz Trucks
This service covers most MP1, MP2 and MP3 models:
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Actros MP1 / MP2 / MP3
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Axor MP1 / MP2 / MP3
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Atego MP1 / MP2 / MP3
Suitable for long-haul, construction, rigid, and specialised trucks running PLD or MR engine systems.
🔧 Supported Part Numbers
We support a wide range of PLD/MR control units, including:
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A0004462440
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A0004461540
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A0004462640
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A0004462940
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A0004463440
If your number isn’t listed, send us a photo or contact us for confirmation.
🔗 Related Products & Helpful Accessories
Aging wiring and connectors can cause poor performance and intermittent ECU faults. We recommend replacing worn connectors when fitting a new ECU.
Replacing cracked plugs or damaged keys alongside your new ECU ensures long-term reliability.
📘 Additional Information for Fleet Owners & Workshops
Our Mercedes PLD MR replacement ECU service is designed to support both individual truck owners and large fleet operators who rely on consistent engine performance. We understand the downtime costs associated with PLD/MR failures, which is why every replacement unit is programmed, verified, and backed by technical support. Whether you are maintaining a single Actros or managing a mixed fleet of Actros, Axor and Atego trucks, Autolectronix provides reliable, cost-effective solutions to keep your vehicles operating safely and efficiently.
💼 Why Choose Autolectronix for PLD MR Replacement?
Autolectronix has over a decade of experience specialising in Mercedes-Benz PLD/MR systems. Our workshop provides professional programming, repair and diagnostic services for heavy-duty vehicles.
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Specialist PLD MR replacement & repair
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Component-level ECU expertise
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3–12 month warranty (service dependent)
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Fast turnaround times
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No fix, no fee on most electronic repairs
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All units bench-tested before shipping
A pre-programmed replacement ECU is often faster, cheaper, and more reliable than dealer alternatives.
📞 Contact Autolectronix
For pricing, compatibility checks or to order a replacement PLD MR ECU:
📧 sales@autolectronix.co.za
📞 +27 31 700 1420
📍 Unit 4 Lubex House, 4 Ivy Road, New Germany, KZN, South Africa
We’re ready to help you get your Actros, Axor or Atego back on the road.