2021-2023 Audi Q5 Cylinder Head Cover Oil Leak TSB

Owners of 2021-2023 Audi Q5 and Q5 Sportback models equipped with the inline 4-cylinder, 2.0-liter TFSI (DPVA Engine) may notice an Audi Q5 cylinder head cover oil leak. This issue, detailed in Technical Service Bulletin (TSB) 2072716/1, describes oil residue appearing on the cylinder head cover.

Symptoms

The primary symptom reported by owners is the presence of "oil residue on the cylinder head cover." Technicians investigating the issue have found that "The cylinder head cover is leaking in the area around the threaded connection on one or multiple bolts."

Technical Background

Audi has identified that the root cause of the Audi Q5 cylinder head cover oil leak is often burrs present on the cylinder head cover bolts. These burrs can prevent the bolts from seating correctly, causing them to become loose over time. This looseness then allows oil to leak from the threaded connections, resulting in visible oil residue.

This issue stems from the production process. Burrs were created during the threading of the screws. To address this, Audi's production solution involved adjusting and verifying the tool used for material feeding by the screw supplier, aiming to prevent burr formation on new bolts.

Diagnosis

Diagnosing this issue typically involves a visual inspection. Technicians will look for oil residue on the cylinder head cover, specifically around the threaded connections of the bolts. The presence of oil in these areas confirms the leakage described in TSB 2072716/1.

Repair Procedure Summary

The repair for an Audi Q5 cylinder head cover oil leak is straightforward. Technicians are instructed to replace the affected bolt or bolts that are found to be leaking. After replacement, it is crucial to ensure that the leaking has been completely remedied to prevent recurrence of the oil residue. The procedure also involves removing and reinstalling the engine cover and securing the camshaft housing.

Warranty Information

This repair may be covered under warranty, depending on the vehicle's age and mileage. For vehicles within 48 months or 50,000 miles, the repair generally falls under the standard warranty. Certified Pre-Owned (CPO) vehicles may also be covered under claim type G10, provided the owner is verified. If the vehicle is outside of any applicable warranty, this Technical Service Bulletin is for informational purposes only, meaning the owner would be responsible for repair costs.

Warranty claims should reference Service Number 1570 and Damage Code 0050. Specific labor operations include:

• Remove and install engine cover: Labor operation code 1083 1900
• Secure camshaft housing: Labor operation code 1503 1399 (20 Time Units)
• Engine Clean: Labor operation code 1001 2999 (20 Time Units)

Diagnostic time for road tests before and after the service procedure is not allowed for this claim. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

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Source: NHTSA ID: 10249212