NHTSA Service Bulletin 10173990: 2020 Toyota 4runner
Official manufacturer communication context for 2020 Toyota 4runner, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Barge in function defaulted to OFF ?Limited phone book grammar ?Difficult Hand Free operation ?Abnormal Electronic Owner?s Manual operation ?Music does not automatically resume when using Android Auto? ?Cover art is not displayed ?Vehicle position isn?t sent to Destination Assist server ?System inoperative after using the return button when using voice recognition Some 2020 model year vehicles equipped with Audio Plus (version 1035) or Premium Audio (version 1035) or earlier may exhibit one or both of the following conditions: ?Abnormal screen play while using Apple CarPlay (primarily during phone calls) ?Poor sound quality during phone calls while using Apple CarPlay Some 2020 model year vehicles equipped with Audio Plus (version 1047) or Premium Audio (version 1047) or earlier may exhibit one or more of the following conditions: ?USB audio does not resume after ignition cycle ?Intermittent rebooting ?Bluetooth disconnecting during a phone call when using Apple CarPlay ?Intermittent screen freezing ?Navigation intermittently will not boot up ?Home Screen Audio widget is blank after a Destination Assist call ?Song, artist, or album data missing ?Abnormal clock operation ?Apple CarPlay intermittently inoperative ?Radio takes a long time to boot up A software update is now available to address these conditions. Follow the Software Update Procedure in this bulletin to update the software.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10173990?
Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Barge in function defaulted to OFF ?Limited phone book grammar ?Difficult Hand Free operation ?Abnormal Electronic Owner?s Manual operation ?Music does not automatically resume when using Android Auto? ?Cover art is not displayed ?Vehicle position.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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