• Genuine Bosch Mercedes Battery Stabilization Module A2305401045 2305401045
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Genuine Bosch Mercedes Battery Stabilization Module A2305401045 2305401045

Genuine Bosch Mercedes Battery Stabilization Module A2305401045 2305401045

$1,999.00 USD
$1,999.00 USD
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Mercedes-Benz Battery Stabilization Control Load Module
Genuine Bosch OEM Replacement

What This Product Covers

We provide original Bosch-manufactured Battery Stabilization Control Load Modules (Mercedes Part # A2305401045 / 2305401045). This critical component is the "brain" of the dual-battery management system, primarily found in the Mercedes-Benz R230 (SL-Class).

Install & Drive – No SCN Coding Required

  • 100% Plug-and-Play: These units are ready for immediate installation.
  • No Programming Needed: Unlike many Mercedes modules, this Bosch unit does not require dealer-level SCN coding or software adaptation. Simply swap the hardware and restore your vehicle's electrical stability.

Technical Alert: Known "Burning" Failures

Through years of specialization, we have identified that these modules are prone to severe internal thermal failure. Due to the high current loads managed by the internal relays, the circuit boards are known to overheat, melt, and physically burn.

Warning Signs:

  • A strong smell of burning plastic or electrical ozone in the trunk area.
  • Visible charring or melting on the module casing.
  • Persistent "Consumer Units Off" messages that do not disappear after driving.

If your module shows signs of physical burning, it must be replaced immediately to prevent potential damage to the vehicle's wiring harness.

Common Fault Codes & Symptoms

Common Mercedes Battery Module Fault Codes:

  • B1010 – Low voltage supply at the Battery Control Module
  • B1059 / B1057 – Fault in CAN communication with the SAM modules
  • 9050 / 9051 – Fault in the relay or internal logic of the BCM
  • B1000 – Internal Module Failure — N82/1 Control Unit
  • B1828 – Component K57 (Battery isolating relay) fault / No Circuit 61
  • B1829 – Starter battery circuit fuse defect
  • B1832 – Component G1/4 (Start battery) fault
  • B1838 – Short circuit at terminal 30 or 30a
  • 9071 – Component K57/2 (Auxiliary battery relay) or signal wire fault

Common Symptoms:

  • Rapid discharge of the auxiliary battery
  • Failure of the "Emergency Start" bridging function
  • Persistent dashboard battery warnings

Part Numbers

A2305401045  |  2305401045

Diagnostic Disclaimer & Mechanic Responsibility

Please read carefully prior to purchase. While the A2305401045 is a frequent failure point, it is part of a complex charging network.

  • Not Always the Module: "Battery Protection Mode" or "Consumers Switched Off" messages can also be caused by a chemically dead auxiliary battery, a worn alternator, or a faulty BNS (Battery Network Sensor).
  • Troubleshooting Required: It is the sole responsibility of the installing mechanic to perform a full electrical diagnostic. You must verify that the alternator is outputting approximately 14.2V and that both the starter and auxiliary batteries pass a load test.
  • Scope of Sale: We are selling a high-quality hardware component. Replacing the module will not resolve issues rooted in a dead battery or a failed charging system.
  • Warranty: Our warranty covers the Bosch hardware provided. It does not cover issues caused by external electrical faults, a failed charging system, or batteries that do not hold a proper charge.

Not sure if this is the right part? Contact us with your VIN or a photo of the existing module before ordering and we'll confirm compatibility.

 

Fitment: 

Here’s the simplified table with those columns removed:

Make Model Years Type Module Type Variant
MERCEDES S-CLASS 03-04 230 Type Body Control SL500
MERCEDES S-CLASS 03-04 230 Type Body Control SL55
MERCEDES S-CLASS 04 230 Type Body Control SL600
MERCEDES S-CLASS 05-06 230 Type Body Control SL500
MERCEDES S-CLASS 05-06 230 Type Body Control SL55
MERCEDES S-CLASS 05-06 230 Type Body Control SL600
MERCEDES S-CLASS 05-06 230 Type Body Control SL65
MERCEDES S-CLASS 07-08 230 Type Body Control SL55
MERCEDES S-CLASS 07-08 230 Type Body Control SL550
MERCEDES S-CLASS 07-08 230 Type Body Control SL600
MERCEDES S-CLASS 07-08 230 Type Body Control SL65
MERCEDES S-CLASS 09 230 Type Body Control SL550
MERCEDES S-CLASS 09 230 Type Body Control SL600
MERCEDES S-CLASS 09 230 Type Body Control SL63
MERCEDES S-CLASS 09 230 Type Body Control SL65
MERCEDES S-CLASS 10 230 Type Body Control SL63
MERCEDES S-CLASS 11 230 Type Body Control SL65
MERCEDES S-CLASS 11-12 230 Type Body Control SL550
MERCEDES S-CLASS 11-12 230 Type Body Control SL63
MERCEDES SLR 08-09 199 Type Body Control —

ID: 2305401045

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Remanufactured

We rebuild OEM control modules with upgraded components to prevent common failures. Unlike junkyard parts that may fail within months, our modules are thoroughly tested and backed by a 6-month warranty. If it fails under warranty, reprogramming is free.

How It Works

Ship us your faulty module. We extract your original data (VIN, mileage, key codes, calibrations) and transfer it to a remanufactured unit. Your old module is recycled for parts. You receive a plug-and-play replacement ready to install.

What to Expect

✓ Turnaround: 2-3 business days

✓ Warranty: 6 months

✓ Programming: Not required—plug and drive

✓ Core Required: Yes (your original module)

About ECU Maverick — OEM Remanufactured Plug & Play Control Modules

ECU Maverick supplies OEM-quality remanufactured control modules, pre-programmed and ready to install. Based in Fort Myers, Florida, we serve independent repair shops, dealerships, and vehicle owners nationwide.

Every module we sell is thoroughly tested, remanufactured to OEM specifications, and programmed to your specific vehicle. No dealer visits, no additional coding, no hassle, ust plug in and drive.

Vehicles We Support

We stock and program modules for European luxury and performance brands, including BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati, and Aston Martin. We also carry modules for domestic vehicles, heavy equipment, and marine applications.

Why Automotive Repair Facilities and Owners Buy From Us

Plug-and-Play Ready — Every module ships pre-programmed and coded to your VIN. No dealer required.

Fast Shipping — Most orders ship within 2–3 business days. Same-day rush available.

OEM Quality — Remanufactured to original equipment standards with component-level inspection and testing.

Direct Support — Text or call us to speak with a real person. We help you find the right module the first time.

6-Month Unlimited Mileage Warranty — Drive with confidence. Our warranty covers you regardless of how many miles you put on.

Our Commitment

We exist to keep your vehicle out of the dealership and back on the road—with quality parts, transparent pricing, and expert support from start to finish. Every module we sell meets the same standards we'd expect for our own vehicles.