in a Mercedes-Benz typically points to a specific fault within the Climate Control (HVAC) system, specifically related to the actuator motors that control air distribution What the Code Means
Check the A/C pressure sensor connector for signs of green corrosion or bent pins.
Mercedes-Benz Diagnostic Trouble Code (DTC) B10A907 is a manufacturer-specific code that typically points to an issue with the air conditioning (A/C) system. Specifically, it indicates a malfunction within the refrigerant circuit, often related to the pressure sensor or the compressor's control valve. mercedes-benz dtc b10a907
The connector under the center console trim can vibrate loose or develop oxidation on the pins, especially in humid climates or vehicles with sunroof leaks.
Increased engine fan noise as the system tries to compensate for high pressure. Potential Causes in a Mercedes-Benz typically points to a specific
Advanced (requires soldering) Time: 1–2 hours Cost: $10–$30 (wire, heat shrink, solder)
Very High (dashboard removal often required) Time: 4–6 hours Cost: $800–$1,500 at a dealer. Not recommended for DIY. The connector under the center console trim can
On some models, the electronic control valve can be replaced without replacing the entire compressor, saving significant repair costs.
In plain English: The small LED or light guide that illuminates the left side of your center console (near the driver’s thigh or around the cupholder area) is not receiving power, or the LED module itself has failed causing an open circuit.
| Repair Method | Parts Cost | Labor Cost | Total Estimate | |---------------|------------|------------|----------------| | DIY – Replace LED module | $40–$120 | $0 | | | DIY – Wire repair | $10–$30 | $0 | $10–$30 | | Independent Shop | $80–$150 | 1 hr ($100–$150) | $180–$300 | | Mercedes Dealer | $120–$200 | 1.5–2 hrs ($250/hr) | $400–$650 | | Dealer (warranty) | $0 | $0 | $0 |
The left console illumination is typically a small, sealed LED module (Part #: A 223 820 13 00 or similar, depending on chassis). These modules are cheaply constructed relative to the car’s price. Internal solder joints crack over time due to temperature changes and vibration, creating an open circuit.