Porsche Audi 12V LiFePO4 Battery BMS Repair Service Mail-In Pre-Test

## BMS Board Service with Pre-Test – Check If Board Service Is Enough or Full Battery Service Is Needed 2017–2020 Porsche • Lamborghini • Audi LiFePO4 12V Battery Professional mail-in service for your original BMS (Battery Management System) circuit board. ✔ Includes pre-test instructions to determine the correct solution before shipping ✔ Helps avoid unnecessary repairs and delays ✔ Service only — no physical product is being sold ## Fast Turnaround • Free U.S. Return Shipping Each board is tested, serviced, and verified before return shipment. Typical turnaround: 1 business day after delivery. Return shipping is included. The buyer is responsible for shipping the item to us. ## How It Works 1. Before purchasing, please send a clear photo of your battery label so compatibility can be confirmed. 2. Purchase this service after compatibility has been confirmed. 3. After purchase, you will receive instructions to perform a basic battery test. 4. The test will determine whether only the BMS board needs to be serviced or if the full battery assembly is required. 5. Based on the results, send either the BMS board or the complete battery. 6. We perform bench testing, service, and functional verification. 7. The serviced unit is returned ready for reinstallation. Before shipping your BMS board or battery, you will receive step-by-step instructions to perform a basic battery check. A multimeter is required to take the necessary measurements. This test determines whether the BMS reset is sufficient or if the battery cells also need charging and balancing. ## Common Symptoms - Battery locked after deep discharge or extended storage - Battery warning or energy management faults - BMS protection shutdown or no communication - Stored fault data inside the BMS - Unstable behavior after recharge ## Important Information - This listing is for BMS board service only — no battery or parts are included. - Ship components based on test results (BMS board or full battery). - Units with severe physical damage, corrosion, or missing components are not serviceable. - All items are bench-tested before return shipment. View Compatible Part Numbers (Click to Expand) Compatibility depends on the battery label and BMS version. Please confirm before shipping. Part NumberPart NumberPart Number9Y0-915-1059Y0-915-105-LY9Y0-915-105-P9Y0-915-105-0Y9Y0-915-105-M9Y0-915-105-Q9Y0-915-105-CY9Y0-915-105-NY9Y0-915-105-R9Y0-915-105-GY9Y0-915-105-J9Y0-915-105-K9Y0-915-105-JY9Y0-915-105-L

• Brand: LG
• DTC: P1D6C00
• Type: Lithium Ion Battery
• OE/OEM Part Number: 9Y0915105, 9Y09151050Y, 9Y0915105CY, 9Y0915105GY, 9Y0915105J, 9Y0915105K, 9Y0915105L, 9Y0915105LY, 9Y0915105M, 9Y0915105NY, 9Y0915105P, 9Y0915105Q, 9Y0915105R, 9Y0915105JY
• Voltage: 12V
• Porsche: Cayenne
• Manufacturer Part Number: 9Y0 915 105 M, 9Y0 915 105 0Y, 9Y0 915 105 CY, 9Y0 915 105 GY, 9Y0 915 105 JY, 9Y0 915 105 NY, 9Y0 915 105, 9Y0 915 105 K, 9Y0 915 105 P, 9Y0 915 105 Q, 9Y0 915 105 R, 9Y0 915 105 LY, 9Y0 915 105 L, 9Y0 915 105 J, 9Y0-915-105, 9Y0-915-105-GY, 9Y0-915-105-0Y, 9Y0-915-105-CY, 9Y0-915-105-J, 9Y0-915-105-JY, 9Y0-915-105-K, 9Y0-915-105-L, 9Y0-915-105-LY, 9Y0-915-105-M, 9Y0-915-105-NY, 9Y0-915-105-P, 9Y0-915-105-Q, 9Y0-915-105-R