2021-2026 Audi Low Coolant Light On But Level Is OK TSB

Symptoms

The primary symptom described in Audi Technical Service Bulletin (TSB) 2061918/6 is the illumination of the low coolant warning light in the instrument cluster. Owners will see the message: "Turn off engine and check coolant level. See owner's manual". If you own an Audi e-tron, this Audi e-tron low coolant light might appear even when the coolant level is visually correct within the expansion tank, indicating a potential false warning rather than an actual low coolant condition.

Technical Background

Audi explains that the large capacity of the coolant circuit can lead to significant fluctuations in the coolant level as the engine heats up and cools down. If the coolant circuit was not correctly filled or bled during manufacturing or previous service, these fluctuations can sporadically trigger the Audi e-tron low coolant light warning. This TSB, 2061918/6, aims to address this specific condition across various Audi models.

Diagnosis and Repair Procedure

When a 2021-2026 Audi vehicle exhibits the Audi e-tron low coolant light issue, technicians are instructed to follow a specific diagnostic and repair procedure. First, a photo of the coolant level must be taken and uploaded to the service record system. The coolant level in the expansion tank must then be checked and adjusted according to the Elsa repair manual, with the engine cold.

A critical step involves carefully inspecting the coolant level sensor connector, including its pins and contacts, to ensure it is free of dirt, damage, or corrosion. After unplugging and replugging the connector, a key cycle is performed. If the low coolant light warning persists after these steps, further diagnosis outside the scope of this TSB is required.

Warranty Information

For eligible vehicles, repairs related to this issue are covered under specific warranty claim types. The primary claim type is 110, applicable for vehicles up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, claim type G10 is used, requiring owner verification.

The service number for this procedure is 1940, with a damage code of 0040. Labor operations include "Check coolant expansion tank" (code 1940 0199), which is allotted 30 time units (TU). Diagnostic time (GFF) and road tests before and after the service procedure are listed with no allowance. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Important Notes for Owners

It's important for owners to understand that if their 2021-2026 Audi vehicle is outside of its warranty period, this Technical Service Bulletin 2061918/6 is for informational purposes only. This means that while the TSB outlines a known issue and a repair procedure, the cost of diagnosis and repair may not be covered by Audi. Owners should always check with their dealership regarding warranty eligibility and potential costs.

NHTSA Citation

This information is based on NHTSA Manufacturer Communication ID 10251621.