2021-2022 Audi A3, Q3, TT Yellow Engine Oil Warning Lamp TSB

Symptoms of the Audi A3 yellow oil lamp issue

Owners of 2021-2022 Audi A3, Q3, and TT models equipped with the 2.0 TFSI Transverse engine may experience a persistent "yellow engine oil level warning lamp" illuminating in the instrument cluster. This warning appears despite the engine oil level being confirmed as correct (not too low) when manually checked with the oil dipstick. This false warning is the primary symptom of the Audi A3 yellow oil lamp problem.

Technical Background

Audi has identified the root cause of this issue as an irregularity in the manufacturing process of the engine oil dipstick. Specifically, the dipstick may be produced slightly too long. This extended length causes the dipstick to provide an incorrect reading to the vehicle's oil level sensor, triggering the "yellow engine oil level warning lamp" even when the actual oil level is within specification.

Diagnosis

To diagnose the Audi A3 yellow oil lamp condition, technicians will first confirm the customer's concern that the "yellow engine oil level warning lamp" is active. The key diagnostic step involves measuring the length of the existing engine oil dipstick.

1. The oil dipstick is removed from its guide tube and thoroughly wiped clean.
2. Using suitable measuring tools, the dipstick's total length is measured. The correct specification for the dipstick is 533.5 mm.

If the measured dipstick length exceeds 533.5 mm, it is considered out of specification and is the likely cause of the false warning. If the dipstick measures exactly 533.5 mm, then this specific TSB 2062911/1 does not apply, and further diagnosis using Guided Fault Finding (GFF) procedures is necessary to identify other potential causes for the warning lamp.

Repair Procedure Summary

The repair for the Audi A3 yellow oil lamp issue, as outlined in TSB 2062911/1, is straightforward once an out-of-specification dipstick is identified.

1. Remove and Clean: The existing engine oil dipstick is pulled out and wiped clean.
2. Measure: The dipstick's length is precisely measured.
3. Replace if Necessary: If the dipstick is found to be longer than 533.5 mm, it must be replaced with a new, correctly specified dipstick.

This procedure ensures that the engine oil level sensor receives accurate readings, resolving the "yellow engine oil level warning lamp" issue.

Required Tools or Parts

• Dipstick: A new engine oil dipstick is required if the existing one is found to be out of specification (longer than 533.5 mm). Part numbers should be referenced in ETKA.
• Measuring Tools: Suitable tools for accurately measuring the length of the oil dipstick.

Important Warnings

• Warranty Coverage: If the oil dipstick is found to be within specification (exactly 533.5 mm), the costs associated with diagnosing and repairing the vehicle cannot be invoiced under the terms of this TSB 2062911/1. In such cases, alternative diagnostic methods, such as Guided Fault Finding, should be used.

Warranty Information

This repair, under Service Number 1716 and Damage Code 0010, is covered under Audi's warranty policies.

• Standard Warranty: Applicable for vehicles up to 48 months or 50,000 miles.
• Certified Pre-Owned (CPO) Warranty: Covered under G10 for CPO vehicles, requiring owner verification.
• Out of Warranty: If the vehicle is outside of any applicable warranty, this Technical Service Bulletin serves as informational guidance only, and repair costs may not be covered.
• Labor Operations: The labor operation for "Remove and install oil dipstick and perform check" is 1716 1999, with an allowance of 30 Time Units (TU). Diagnostic time for Guided Fault Finding and road tests before and after service are not allowed for billing under this TSB. The claim comment should reference TSB #2062911/1.

Source

NHTSA ID: 10190239