2019-2023 Audi e-tron & e-tron Sportback Drive Motor Control Module: Decoding the 'Drive System Malfunction' Warning

What is the Drive Motor Control Module?

In the all-electric Audi e-tron and e-tron Sportback, the part many people might search for as an "Engine Control Module (ECM)" is actually the Drive Motor Control Module. Since there is no internal combustion engine, this module manages the electric drive motors instead. It is a powerful computer that controls power delivery from the battery to the wheels, making it one of the most critical electronic components in the vehicle.

This guide focuses on the module identified by Audi part numbers 4KE907558, 4KE907558A, and 4KE907558C. These modules are responsible for the operation of the electric motors and are a key part of the vehicle's high-voltage system.

Symptoms of a Failing Drive Motor Control Module

A problem with the Drive Motor Control Module often triggers a cascade of warnings on the dashboard. 🎬 Watch: A quick guide to common Audi dashboard warning lights. The vehicle is designed to alert the driver immediately to any potential issue with the high-voltage drivetrain.

• "Drive System: Malfunction!" Warning: This is the most common and significant symptom. This message indicates a fault has been detected somewhere in the electric drive system. While it can be caused by other issues, it is frequently linked to this control module.
• "All-wheel drive: malfunction!" Warning: Because this module controls the motors, a fault can disable or affect the quattro all-wheel-drive system, triggering this secondary warning.
• Reduced Power (Limp Mode): The vehicle may noticeably limit its power output to protect the drivetrain components. You'll feel sluggish acceleration and a general lack of performance.
• Vehicle Will Not Start or Enter "Ready" Mode: In severe cases, the vehicle may be completely immobilized and will not switch into the "Ready to Drive" state.
• Loss of Regenerative Braking: The system that recharges the battery during deceleration may be disabled.
• Check Engine Light and Multiple Fault Codes: A failing module can store a variety of Diagnostic Trouble Codes (DTCs). A common code directly related to this module is P060C00 (Internal Control Module Main Processor Performance). You may also see a flood of communication-related codes as other modules in the car report that they cannot talk to the drive motor controller.

Known Issues, TSBs, and Related Problems

Not every "Drive System: Malfunction!" message means the module itself has failed. Audi has identified several specific issues related to this warning.

Technical Service Bulletin (TSB) for Software Update

Audi issued Technical Service Bulletin 93 23 95 2068931/1 for 2020-2022 e-tron and e-tron Sportback models. This TSB addresses the "Drive System Malfunction" warning when caused by DTC P060C00. The problem is identified as a software issue within the control module. The fix is not to replace the module, but for a dealer to perform a software update using their Software Version Management (SVM) system. If your vehicle displays this symptom, a trip to the dealer for a software update may be all that is needed.

Related Problem: Electric Motor Coolant Leaks

The same "Drive System Malfunction" warning can be triggered by a different issue: an internal coolant leak in one of the electric drive motors. This is addressed by TSB 93 24 46 2073858/5, which looks for DTC P0AA600. In this case, 🎬 See how an internal coolant leak can damage the motor. the motor itself is the problem, not the control module. A technician would need to diagnose the source of the fault code to determine the correct repair.

Related Problem: Clogged Plenum Drains

A critical maintenance issue can mimic a catastrophic electronic failure. The plenum chamber, located at the base of the windshield, has drains that can become clogged with leaves and debris. If they clog, water can overflow into areas containing sensitive electronics. On the e-tron, this can short out the PTC heater, which in turn blows a high-voltage fuse located in a unit on top of the main battery. This will cause a no-start condition and multiple high-voltage errors, which could be misdiagnosed as a failed drive motor or control module. Regularly cleaning these drains is crucial preventative maintenance.

Buying a Used Drive Motor Control Module

Purchasing a used module can be a cost-effective solution, but it requires careful attention to detail. Given the complexity of this part, it is one of the most critical components to get right.

• Verify the Part Number EXACTLY: The part number on the replacement module must be an exact match to your original unit. The primary part numbers are 4KE907558, 4KE907558A, and 4KE907558C. Do not install a module with a different part number.
• Match the Power Output: These modules are calibrated for the vehicle's specific power level. The parts are often specified for the 300kW system, which corresponds to the e-tron '55' models. Using a module with the wrong software can cause performance issues or prevent the vehicle from working at all.
• Inspect for Damage: When you receive the used part, inspect the casing for any cracks or signs of being opened. Most importantly, check the connector pins to ensure they are straight, clean, and free of any corrosion.
• Factor in Programming Costs: A used module is not a plug-and-play part. The purchase price of the used module is only part of the total cost. You MUST have it programmed to your vehicle, which can be a significant added expense.

Programming, Installation, and Component Protection

This is not a DIY-friendly part to replace due to the software requirements.

1. Installation: While the physical swap may be straightforward for a technician, the module is part of the high-voltage system. Proper safety procedures must be followed to de-energize the system before work begins.
2. Programming: After installation, the module must be programmed to the vehicle using Audi's ODIS (Offboard Diagnostic Information System) software. This process adapts the module to the specific options and configuration of your car.
3. Component Protection: This module is part of Audi's "Component Protection" system. This is an anti-theft feature that links the original factory-installed modules to the vehicle's VIN. When a new or used module is installed, the Component Protection becomes active, and the part will not function correctly. An Audi dealer or a certified independent shop with a special online connection to Audi's servers must perform a procedure to remove the Component Protection and validate the new part in the vehicle.

Cost of Replacing a Drive Motor Control Module

The cost can vary significantly based on the source of the part and the labor required for programming.

Note: Prices are estimates as of late 2025/early 2026 and can vary by region and supplier. The main variable is the cost of programming, which differs between dealerships.

Frequently Asked Questions (FAQ)