2021-2023 Audi e-tron Electric Motor Condensation TSB

Why This Matters for Your Audi e-tron

Audi has issued Technical Service Bulletin (TSB) 93 23 07 2070348/1 to address observations of condensation inside the cover for power electronics connections in the electric drive motor of certain 2021-2023 Audi e-tron models. This bulletin is crucial because it informs technicians and owners that the presence of this condensation is typically a normal condition and does not indicate a fault requiring repair.

The TSB aims to prevent unnecessary diagnostic work and repairs for a condition that is not detrimental to the vehicle's operation. Understanding this information can save owners time and potential expense, ensuring that their Audi e-tron electric motor condensation is correctly identified as a non-issue.

Symptoms: What Technicians Might Observe

According to Audi, there is no specific customer complaint associated with this condition. Instead, the Audi e-tron electric motor condensation is usually discovered by technicians during routine maintenance or when performing repairs for other, unrelated concerns. The primary observation is:

• Condensation found on the cover for power electronics connections in the electric drive motor.

This condensation is visible inside the cover, as illustrated in Figure 1 of the original bulletin, which shows moisture droplets on the internal components.

What Owners Should Know: Important Warnings

This TSB provides critical guidance for both technicians and owners regarding the Audi e-tron electric motor condensation:

• No Further Issues: Audi explicitly states, "If the concern is only condensation, this will not lead to further issues." This means that the presence of condensation alone is not a sign of a problem and will not negatively impact the vehicle's performance or longevity.
• Do Not Repair: Technicians are instructed, "Do not perform additional repairs if water condensation is detected on the inside of the cover for power electronics connection to the motor." This prevents unnecessary work and potential component replacement.
• Distinguish from Coolant Leaks: It is vital to differentiate between condensation and a coolant leak. The TSB emphasizes, "It is important to check that there is no coolant in the area around the bolts. If there is coolant in the connection area this TSB does not apply and this condition will require diagnosis." If coolant is present, it indicates a different, more serious issue that requires immediate attention.
• Informational Only: This TSB (reference 2070348) is informational and "not applicable to any Audi warranty." This means that while it provides guidance, it does not cover a warrantable defect.

Diagnosis and Trigger Conditions

Audi's technical background explains that the condensation observed on the power electronics connections is a natural phenomenon. It appears "due to temperature differences and humidity." This is common in many systems where air with varying moisture content comes into contact with surfaces at different temperatures, leading to moisture accumulation.

Technicians will typically encounter this condition when accessing the electric drive motor for other services. The key diagnostic step is to visually inspect the area to confirm that the moisture is indeed condensation and not a leak of coolant or another fluid.

Repair Procedure Summary

For the condition of Audi e-tron electric motor condensation alone, the repair procedure is simple: no repair is necessary. The TSB explicitly advises against performing additional repairs if only water condensation is detected. The only action required is to ensure that the moisture is purely condensation and not coolant. If coolant is found, then a proper diagnosis and repair for the coolant leak would be required, as this TSB would not apply to that situation.

Owner Action and Next Steps

If you own a 2021-2023 Audi e-tron and a technician notes condensation on the electric drive motor's power electronics cover, you should be aware that this is generally considered normal. There is no specific action required from you unless your technician identifies coolant in the area. In such a case, further diagnosis would be needed to address the coolant leak.

It is always recommended to have your vehicle serviced by an authorized Audi dealership or a qualified independent repair shop. They will be familiar with this TSB and can accurately assess any observations related to your Audi e-tron electric motor condensation.

---

Source: NHTSA ID: 10237008