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R230 Auxiliary Power Control Module (BCM Replacement Solution)

Engineered Alternative to OEM BCM Failure with CE-certification, E-automotive mark and RoHS. The most advanced aftermarket unit for sale.

Be aware of other uncertified and moisture sensitive units on the market

Failure of the original auxiliary Battery Control Module (BCM) is a known issue on the R230 platform.

When the BCM fails, common symptoms include:

• Red battery warning on the dashboard

• Deactivation of auxiliary systems

• Charging irregularities

• Expensive replacement recommendations

New OEM modules often exceed €2,000 and used units carry significant risk due to age and repeated failure patterns.

Where the EverDrive module stands out!:

• Improved design for power transfer by using brass leads instead of steel. The surface area has increased to 20mm2 from the original 10mm2 significantly improving power loss and heat generation 
• Fuses on the main leads to protect the board against overconsumption
• Other solutions consume at least 20mA and slowly drain your battery. EverDrive uses the CAN wake-up line to power the module so at rest 0.0mA and no drain. There is absolutely no parasitic drain with an Everdrive BCM unit
• Remote emergency start which allows on a press of the button to connect both batteries to allow crank on low batteries for 15s only. Preventing overheating. 
  
• No additional wiring needed- 4 mounting screws and the original connectors. DONE. 
  
• The only true plug and play replacement where other units need significant adaptations and or extra wiring added. This is the only unit who is truly and fully an OEM replacement. 
  
• Full unit IP67 dust and waterproof which is essential due to R230 prone to leaking boot seals. This is achieved by hard potting the CAN unit as well as the DCDC charger and mechanical VSR relay. 
• Any existing boards are well over 20 years old, sometimes repaired units. The design flaw remains often induced by moisture in the trunk. The Everdrive unit is IP67 moisture rated.
• Full business environment, order with confidence a unit with CE certification, RoHS
• The unit is featured on YouTube and supported by various communities and enthusiast groups. 

This solution provides a structured and modern alternative.

Choose Your Configuration

CAN Emulator Module – €379

Be aware that you are required to have your own DCDC charger

For owners implementing an external DC-DC charging solution

This module:

• Connects directly to the original BCM multiconnector

• Communicates on the vehicle CAN network in both directions.  

• Wake-up on CAN signal so no draw at rest

• 15 second emergency operation over remote control to allow start on low battery. 

• Eliminates BCM-related warning messages and unlocks comfort features.

• Allows proper auxiliary battery system operation when paired with a suitable DC-DC charger

Ideal for technically experienced owners implementing a modular charging setup.

Features:

• Plug & play connector design

• Compact, sealed housing IP67 water en dust proof 

• Designed for automotive vibration environment

🥈 Full BCM Replacement – €599

OEM drop-in replacement module

Includes:

• Commercial automotive housing UL95-V0 and CE certification required to sell commercially around the world. E- mark certification required a commercially produced casing with an UL-95 V0 fire rating. 
• Fully IP67 dust and waterproof rating which is a critical feature for the boot of an R230 which is prone to leaking. Achieved by full potting the unit. 
• Integrated CAN bi-directional management which manages the battery health over CAN but also uses the CAN wake-up signal to activate/deactivate the Everdrive unit. This is unique and not provided anywhere else. 
• 0mA parasitic draw compared to other solutions in the market (min 20mA). The Everdrive unit will not drain your battery when parked or will keep you CAN bus system awake.
• Built-in 15A DC-DC smart charging module which only replenishes the starting battery when needed. The Everdrive V3 launches in October 2026 which include also LiFePo4 or Lithium battery charging
• 30/20A fused battery protection on the in and out cables to the batteries
• 1-on-1 drop in replacement. 4 nuts on the original bracket and reconnect cables multi-connector. True 5min install and no extra wiring needed or splicing
• Driver controlled emergency start key fob - allows to start the car when the front battery is low by temporarily bridging the starting and auxiliary battery. Unique to Everdrive.

Advantages:

OEM appearance retained as fully mounted behind carpet without need for cutting holes. Mounts on the original bracket. Carpet can be folded away easily

No external add-on boxes or loose DCDC chargers in the boothFit for purpose DCDC chargers for SL battery management retaining the architecture and functionality the way Mercedes intended it

Structured power protection

Immediate availability- no waiting lists and excellent customer service  

This solution preserves the factory look while modernizing internal power management components.

Why This Approach?

The original BCM design combines:

• Battery management

• DC-DC conversion

• CAN communication

When internal electronics fail, the entire unit is typically replaced.

This solution separates these functions into a modular, serviceable architecture while maintaining correct vehicle communication.

Restore Functionality — Without OEM Replacement Cost

• Eliminate warning messages

• Maintain auxiliary battery operation

• Avoid used OEM modules at high costs to repair or replace without remediating the design faults.

Pricing

CAN Emulator Module: €379
Full kit BCM replacement: €599

Everdrive is the only aftermarket substitute for the OEM Mercedes BCM that offers all critical functionality while being CE certified and sold as commercial entity, offering full webshop environment and secure payments. No special waiting lists or preferential treatments. First come first serve with 4 weeks waiting time.