Tesla Model S infotainment failure (2012—2018)

Questions to ask

1. Is VIN (Vehicle Identification Number) [VIN] within the scope of the original NHTSA (National Highway Traffic Safety Administration) eMMC recall, and if so, has the recall remedy been performed?
2. If the recall has been performed, what was the resulting hardware configuration — eMMC replacement only, or full MCU2 upgrade?
3. If VIN [VIN] is outside the recall scope, what are the available repair paths — paid MCU2 upgrade, paid eMMC replacement, or other?
4. What is the cost quoted for each available repair path, and what is the warranty period on the repair?
5. Are there any known software updates that would defer the failure or restore partial function, and have those been applied?
6. Will the service ticket explicitly document the diagnosis (eMMC failure vs other MCU fault) before any paid work is authorized?

Documents to request

• Diagnostic report identifying the specific failure mode — eMMC wear-out, other MCU fault, or related component failure
• Service ticket detail, downloadable from the Tesla app, with the recommended repair and itemized cost
• Written confirmation of whether VIN [VIN] is within the original NHTSA recall scope and the status of that recall for this VIN
• Cost estimate for each available repair path, including parts, labor, and warranty period
• Comparison information about MCU2 upgrade versus eMMC-only replacement, if both are available paths

Pre-service evidence

• Photograph or video-record the touchscreen failure as it occurs — frozen image, reboot, blackout, distortion
• Note specific incidents — date, vehicle state, what the touchscreen was attempting at the time — for the service record
• Screenshot the Tesla app message thread, including any prior service interactions related to the MCU
• Save the service ticket number and the original purchase or warranty documentation that establishes coverage period
• If a backup camera failure has been observed, document that separately — it is FMVSS-classified and may have additional implications
• Record the service center location and service advisor name

Service advisor interaction

• Tesla service communication occurs primarily through the Tesla app message thread. Treat the app thread as the official written record.
• If a verbal phone conversation occurs, request that a summary be added to the app message thread before the call ends
• Note whether the diagnosis specifically identifies eMMC wear-out as the failure mode, since this distinction affects which repair paths apply
• For vehicles outside the recall scope, the choice between MCU2 upgrade and eMMC-only replacement is significant — request both options in writing where they are available, since pricing and outcomes differ substantially

Repair authorization

• If VIN [VIN] is within the original recall scope and the recall remedy has not been performed, the work is at no charge to the owner. Do not authorize any paid work until the recall scope status is confirmed in writing.
• Out-of-recall MCU2 retrofit pricing varies and has changed over time. The current quoted price should be confirmed in writing, including parts, labor, and the warranty period applicable to the upgrade.
• Independent shops offer eMMC replacement at significantly lower cost than Tesla's MCU2 retrofit. The choice has implications for documentation, parts, and any remaining vehicle warranty on related components — these should be considered together rather than on price alone.
• Tesla service estimates appear in the Tesla app and approval is granted through the app interface. Approval is binding — review every line item before approving.

Post-service verification

• Verify the touchscreen functions normally — no freezing, blackouts, or unexpected reboots — over a short test drive and several driving cycles
• Confirm backup camera displays immediately upon shifting into reverse
• Verify Bluetooth, cellular, and radio function as expected
• Confirm the service ticket in the Tesla app is marked closed with the work performed clearly documented
• If MCU2 was installed, verify the new touchscreen interface is functional and responsive across all menu interactions
• Download and retain the closed service ticket as a PDF immediately after pickup

Email templates

Warranty notes

• The original Tesla NHTSA eMMC recall covered a portion of affected MCU1 vehicles. The recall remedy is at no charge to the owner; vehicles within scope and unrepaired remain eligible regardless of vehicle age or mileage.
• Vehicles outside the recall scope are subject to paid repair at Tesla service rates or independent shop rates.
• MCU2 retrofit performed by Tesla typically carries a warranty period from installation date, but the specific period and conditions should be confirmed in writing.
• Independent eMMC replacement may not come with a Tesla-administered warranty; the warranty terms are between the owner and the independent shop and should be confirmed in writing.
• Repairs performed under goodwill rather than recall or warranty do not extend the original vehicle warranty period. Confirm in writing which classification applies.

This playbook covers

• Tesla Model S 2012 risk profile
• All Tesla EVs we rate

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