2022-2023 BMW Emergency Call System Error TSB

Symptoms

Owners of affected 2022-2023 BMW vehicles may observe a specific warning message on their instrument cluster. The primary symptom is the display of the check control message "Emergency call not available". This message indicates a potential issue with the vehicle's emergency call system.

Additionally, Check Control Message 299 may be stored in the instrument cluster's check control message list or within the vehicle's key data. This fault can sometimes be intermittent, potentially resolving itself after a drive cycle, but it may reappear in subsequent driving cycles. If you see a "BMW emergency call system error", it's important to have it checked.

Fault Codes / OEM Fault Labels

The primary identifier for this issue is Check Control Message 299, which is stored in the vehicle's systems. The owner-facing message is "Emergency call not available". The internal repair code associated with this problem is 8411021100, labeled as "Telematics control unit Occasional failure".

Cause

The root cause of the BMW emergency call system error is identified as unfavorable software within the telematics module, specifically the TCB4 unit. This software anomaly prevents the emergency call system from functioning correctly, leading to the warning message.

Important Warnings

BMW advises technicians to follow specific guidelines when addressing this issue. If the vehicle's current I-level (software integration level) is already at 23-11-500 or a more recent version, the vehicle should not be programmed. In such cases, standard diagnostic procedures should be followed instead.

Furthermore, during any programming procedure, it is crucial to always connect a BMW-approved battery charger/power supply (SI B04 23 10). This ensures stable voltage throughout the programming process, preventing potential issues or damage.

Repair Procedure Summary

The recommended repair for the BMW emergency call system error involves updating the software of the telematics module (TCB4). The first step for a technician is to determine the vehicle's current I-level using either AIR or AWP applications.

If the I-level is found to be lower than 23-11-500, the vehicle must be programmed to I-level 23-11-500 or a higher version. This programming is performed using ISTA 4.44.1x or a newer version of the diagnostic software. The procedure includes connecting a battery charger and the programming system (ISTA 4) to the vehicle. Technicians will then determine and accept the measures plan, working through it to program, encode, and enable the necessary control units. Following a rework list, a vehicle test is performed, and any stored fault memory is deleted.

Required Tools or Parts

To perform the software update, technicians will need access to specific BMW diagnostic and programming equipment. This includes:

• ISTA 4.44.1x or a newer version of the Integrated Service Technical Application software.
• A BMW-approved battery charger/power supply to maintain stable voltage during the programming process, as referenced in SI B04 23 10.

Owner Action

If your 2022-2023 BMW is displaying the "Emergency call not available" message or you suspect a BMW emergency call system error, it is recommended to schedule an appointment with an authorized BMW dealership. The dealership technicians have the necessary tools and software, including ISTA 4.44.1x, to diagnose the specific I-level of your vehicle and perform the required software update to the telematics module (TCB4).

This software update is typically covered under the terms of the BMW New Vehicle Limited Warranty or BMW Certified Pre-Owned Program, provided the vehicle meets the eligibility criteria.

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Source: NHTSA ID: 11000566, SIB 84 02 24