2021 Audi e-tron Range Display Software Update

Why This Matters

Audi has launched Service Action 93N1 to update the software for the remaining range display in certain 2021 Audi e-tron vehicles. This update aims to resolve issues where the vehicle's estimated range may be inaccurate, impacting driver confidence and vehicle functionality. The software modification is crucial for ensuring the vehicle's systems provide correct information to the driver.

It is important to note that if your vehicle has open safety recalls 93V2 or 93U9, these must be completed before performing Service Action 93N1. Failing to do so will erase the high-voltage battery's historical data, leading to an inaccurate evaluation of the battery cell modules. This could have significant implications for the vehicle's long-term battery health monitoring.

Symptoms

Owners of affected 2021 Audi e-tron vehicles may experience one or more of the following issues related to the Audi e-tron range display:

• "Navigation system indicates that the range of HV battery charge is not sufficient to reach the destination entered"
• "12V battery is discharged after charging the HV battery"
• "Repeated charge complete notifications received in the myAudi app"

Important Warnings for Owners and Technicians

Audi has issued several critical warnings regarding Service Action 93N1 to ensure proper repair and prevent further issues:

• Dealer Inventory: Dealers must ensure that every affected inventory vehicle has this campaign completed before delivery to consumers.
• Warranty Expiration: This service action will be available free of charge only until December 01, 2026. If you wish to have this service performed after this date, your dealer's normal costs associated with the repair will apply.
• Pre-existing Recalls: If the 93V2 or 93U9 safety recall is open, complete those campaigns before the 93N1. The software update in the 93N1 will erase the high-voltage battery historical data and will lead to an inaccurate evaluation of the high-voltage battery cell modules.
• Diagnostic Tool Usage: Do NOT use Guided Fault Finding (GFF) to perform this flash. Using GFF will cause the flash to take longer, and requests for additional time will not be considered.
• Connection Method: The VAS Diagnostics Interface MUST ONLY be connected to the tester with a USB cable. Using Bluetooth or WiFi for this action is PROHIBITED!
• Risk of Damage: Performing a software update using a Bluetooth or WiFi connection increases the risk of losing connection during the update, which could result in damage to the control module. Requests for additional time or parts will be denied if the GFF log shows the update was performed using Bluetooth or WiFi.
• Radiator Fan Safety: Radiator Fan(s) may cycle ON high speed during the Update Process! There is a serious risk that personal injury may result if contact is made with spinning fan blades. Keep hands and all objects away from Radiator Fan(s) during Update Process!
• Claim Eligibility: Operating mode “Flash” must be used. Performing this update using "Diagnosis" (Guided Fault Finding) could result in non-payment of the claim.
• Safety Recalls: All Safety Recalls must be completed prior to completing this campaign.

Repair Procedure Summary

The repair for the Audi e-tron range display issue involves a software update performed by an authorized Audi dealer. The process, identified by Service Action 93N1, takes approximately one hour to complete and is performed free of charge until the campaign expiration date.

Technicians begin by verifying the vehicle's eligibility using the Campaigns/Actions screen in Elsa. If multiple software update campaigns are open, they must be performed in order of their start date, with the oldest being completed first. Crucially, any open safety recalls must be addressed before proceeding with 93N1.

Before initiating the software update, several preparatory steps are required. The ODIS software on the diagnostic tester must be completely up to date, and a battery charger (such as the GRX3000VAS or equivalent) must be connected to the vehicle's 12V battery, ensuring voltage remains above 12.5 volts throughout the process. Screen saver and power-saving settings on the diagnostic tester must be disabled. The diagnostic tester (VAS6150X/VAS6160X) must be plugged in using its power adapters and connected to the vehicle via a USB cable; wireless connections are strictly prohibited due to the risk of data loss and control module damage. The vehicle's ignition must be on, the parking brake released, and all non-essential electrical consumers (headlights, heated seats, climate control) switched off. Hazard warning lights must be turned on to prevent the system from entering bus sleep mode during the update.

The software update is performed using the