2021-2023 Audi Q5/SQ5 Oil Leak from Cylinder Head Cover TSB

Audi has released Technical Service Bulletin (TSB) 2072716/2 to address instances of oil residue and leaks originating from the cylinder head cover on certain 2021-2023 Audi Q5 and SQ5 vehicles equipped with the 2.0 ltr. TFSI inline 4-cylinder engine. This TSB, issued on May 16, 2024, supersedes an earlier bulletin, Group 15 number 24-47, dated January 18, 2024, to include revised warranty information.

Symptoms

Owners of affected vehicles may observe visible oil residue on the cylinder head cover. This is the primary indicator of the issue. When inspected by a technician, the workshop findings confirm that the cylinder head cover is leaking in the area around the threaded connection on one or multiple bolts. Figure 1 in the original TSB illustrates this specific point of leakage.

Diagnosis / Trigger Conditions

The technical background provided by Audi indicates that the root cause of this oil residue cylinder head cover issue is burrs present on the cylinder head cover bolts. These burrs can prevent the bolts from achieving proper torque and seating, leading them to become loose over time. The loosened bolts then allow oil to seep out, resulting in the observed oil residue cylinder head cover condition.

Audi has identified that these burrs were a manufacturing defect, caused during the threading process of the screws. A production solution has since been implemented, involving the adjustment and verification of the tool used for material feeding by the screw supplier to prevent future burr formation.

Repair Procedure Summary

The recommended repair outlined in TSB 2072716/2 involves replacing the affected cylinder head cover bolt(s). The service procedure includes several labor operations to facilitate this repair.

Technicians will need to remove and reinstall the engine cover. Depending on access requirements, it may also be necessary to remove and reinstall ignition coils. After replacing the bolts, the camshaft housing is secured, and the engine area is cleaned to remove any residual oil. The TSB specifies Service Number 1570 and Damage Code 0050 for warranty claims related to this repair.

Important Warnings

It is crucial for technicians to verify the effectiveness of the repair. The TSB explicitly states, "Please ensure that replacing the bolts remedies the leaking." This step is essential to confirm that the oil residue cylinder head cover problem has been fully resolved and to prevent recurrence.

Owner Action

If you own a 2021-2023 Audi Q5, Q5 e quattro, Q5 Sportback, SQ5, or SQ5 Sportback and notice oil residue on your cylinder head cover, it is advisable to contact an authorized Audi service center. Inform them about your observations and mention Technical Service Bulletin 2072716/2. This will help ensure that your vehicle is diagnosed and repaired according to the manufacturer's guidelines.

Warranty coverage for this repair is typically available for vehicles within 48 months or 50,000 miles from the original in-service date. Certified Pre-Owned (CPO) vehicles may also be covered under specific conditions. Your Audi dealer can provide detailed information regarding your vehicle's warranty status.

Source: NHTSA ID 11002117