19 Low Coolant Light Is On But The Coolant Level Is Within Specifications (GROUP 19, NO. 24-55)

WARNING: This page is about the A4 Quattro Premium, 2.0L Eng VIN A, which is a different variant/trim than selected.

Publication date: 2024-03-12
Reference number: GROUP 19, NO. 24-55
Supersedes refnos: 2061918, 2061918/1, 2061918/2, 2061918/3, 2061918/4, 2061918/5, 2061918/6, GROUP 19, NO. 21-11, GROUP 19, NO. 21-12, GROUP 19, NO. 21-19, GROUP 19, NO. 21-26, GROUP 19, NO. 24-49

19 LOW COOLANT LIGHT IS ON BUT THE COOLANT LEVEL IS WITHIN SPECIFICATIONS

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 19, NO. 24-55 (2061918/6), Date of Issue: March 12, 2024

AUDI:	2017-2025 All Audi Vehicles
GROUP:	19 - Engine - Cooling System

Superceded Bulletin(s): GROUP 19, NO. 24-49, Date of Issue: February 07, 2024

SERVICE INFORMATION

19 24 55 2061918/6 March 12, 2024. Supersedes Technical Service Bulletin Group 19 number 24-49 dated February 7, 2024, for reasons listed below.

APPLICABLE MODELS AND YEARS

Model(s)	Year	VIN Range	Vehicle-Specific Equipment
All Audi Vehicles	2017 - 2025	All	Not Applicable

CONDITION

REVISION HISTORY

Revision	Date	Purpose
6	-	Revised header (Added MY's)
5	02/07/2024	Revised Condition (Added images) Revised Service (Added steps)
4	12/14/2021	Revised header (Added Model Year) Revised Warranty (Corrected typo)

Customer states:

The coolant warning light appears in the instrument cluster.
Please confirm the light that the customer is referring to is the coolant light (Figure 1) and not the distance warning light (Figure 2).

Workshop findings:

When checking the coolant level visually on the coolant expansion tank the level is between minimum and maximum as it should be.

TECHNICAL BACKGROUND

Due to the large coolant circuit capacity, there is significant fluctuation in the coolant level when the coolant cools down and heats up. If the coolant circuit is incorrectly filled or bled, this can lead to sporadic illumination of the low coolant level warning light.

PRODUCTION SOLUTION

Not applicable.

SERVICE

To diagnose the concern, please follow the steps below:

Please capture a photo of the coolant level before moving to next steps. Please upload the photo to Doc-it.
The coolant level in the expansion tank must be set/checked according to the Elsa repair manual while the engine is cold.
The connector (including pins and contacts) should be checked carefully.
The contact surface of the pins and connector must be free of dirt and must not be damaged.
After unplugging and plugging the connector back in, perform a key cycle and check if the concern returns. If it does, then continue with normal diagnosis outside of this TSB.

WARRANTY

WARRANTY INFORMATION

Claim Type:	110 up to 48 Months/50,000 Miles. G10 for CPO Covered Vehicles - Verify Owner. If the vehicle is outside any warranty, this Technical Service Bulletin is informational only.
Service Number:	1940
Damage Code:	0040
Labor Operations:	Check coolant expansion tank	1940 0199	30 TU
Diagnostic Time:	GFF	No allowance	0 TU
	Road test prior to the service procedure	No allowance	0 TU
	Road test after to the service procedure	No allowance	0 TU
Claim Comment:	As per TSB 2061918/6

All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures Manual. Claims are subject to review or audit by Audi Warranty.

ADDITIONAL INFORMATION

All part and service references provided in this TSB (2061918) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.