92 Washer Solvent Level Warning Is On (GROUP 92, NO. 23-36)

92 WASHER SOLVENT LEVEL WARNING IS ON

TECHNICAL SERVICE BULLETIN

SERVICE INFORMATION

92 23 36 2038151/15 July 17, 2023. Supersedes Technical Service Bulletin Group 92 number 23-35 dated May 22, 2023, for reasons listed below.

CONDITION

Customer states: 

• The washer solvent level warning is on in the driver information system (DIS), but the washer solvent level is correct.

Workshop findings: 

• There is no functional restriction in the windshield washer system.

TECHNICAL BACKGROUND

The sensitivity of the washer solvent level sensor (G33) can be affected by the type, concentration, and the presence of additives in the washer solvent currently in the tank. The operation of the level sensor relies on the composition of the solvent to provide an accurate message on the solvent level. Incorrect concentration and the presence of additives can contaminate the sensor and reduce its sensitivity.

PRODUCTION SOLUTION

Not applicable.

SERVICE

If the washer solvent reservoir is full and the low solvent warning is on, proceed as follows:

1. Empty the reservoir and for all vehicles except  A3 Sedan and A3 Cabriolet, remove the level sensor. Clean the sensor probes using all-purpose cleaner D 009 401 04  (Figure 1) or, as an alternative, isopropyl alcohol. Reinstall the level sensor.
2. For Audi A3 Sedan and A3 Cabriolet where the washer solvent level sensor is not removable the sensor probes can be cleaned by removing the reservoir, removing the filler neck from the reservoir, and gaining access to the sensor probes (Figure 2).
3. Saturate the tip of a cleaning brush with a rigid stem and long enough to reach the probes (approximately 10") with all-purpose cleaner D 009 401 04  or isopropyl alcohol. A hummingbird feeder cleaning brush is shown in the illustration but any suitable cleaning brush with a tip constructed of the appropriate material will function well for this purpose (Figure 3).
4. Thoroughly clean the sensor probes (Figure 4).
5. Refill the reservoir with the correct type and concentration of solvent. Windshield washer fluids found in the Audi Top Service Supplies and Touch Up Paint eStore with a 35% pre-mix are suitable for temperatures down to -30°C (-22° F) and contain no rain repellents. For freeze protection below this temperature range Windshield Washer Fluid Concentrate ZAW 096 311 B  can be used and mixed according to the table below (Figure 5). This solvent can be adjusted for freeze protection to -32° C (-25° F), prevents washer jet contamination, particularly on the "fan" type of washer jet, and is highly effective in removing residues and insects from the windshield.
   NOTE: Dealers in states such as California which have a restriction on windshield washer solvent VOC content can use Audi Windshield Washer Fluid - 35% pre-mix - (55 gallon) available from the Audi Top Service Supplies & Touch-Up Paint eStore as an alternative. This solvent contains no water repellents and has freeze protection to - 22° F.
6. The concentration and freeze point can be checked using the T10007A refractometer (Figure 6).
7. Put a drop of washer fluid with the pipette on the glass of the refractometer. When viewing the refractometer, a lightdark border can be clearly recognized. Using the scale to the right (Figure 7), adjust the concentration of the solvent to accommodate the current weather conditions.
8. Concentration guidelines:

   Freeze protection	Windshield Washer Fluid Concentrate ZAW 096 311 B	Water
   -16°C (3° F)	1 part	3 parts
   -30°C (-22° F)	1 part	2 parts
   -32°C (-25° F)	1 part	1.5 parts

WARRANTY

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.

REQUIRED PARTS AND TOOLS

Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
Part Number	Part Description	Quantity
ZAW 096 311 B (item number 128429) (Available from the Audi Top Service Supplies & Touch-Up Paint eStore)	Windshield Washer Fluid Concentrate	Shop Supply
Item # 121133/Customer Item # WWFDRUM (Available from the Audi Top Service Supplies & Touch-Up Paint eStore)	Washer solvent alternative for states with VOC restrictions	Shop Supply
D00940104 or isopropyl alcohol	All-purpose cleaner	0.1
See ETKA	Fasteners, Bolts, Nuts and Screws as needed per the Repair Manual	See ETKA/ELSA

Tool Number	Tool Description
T10007A	Refractometer

ADDITIONAL INFORMATION

All parts and service references provided in this TSB (2038151  ) are subject to change and/or removal.

©2023 Audi of America, Inc.  All rights reserved. The information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of America, Inc., its affiliated companies, and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these materials be modified or reposted to other sites without the prior expressed written permission of the publisher.