FCC certification for wireless remote control toys and cars on the US site: FCC-ID testing.

FCC Certification for Wireless Remote Controls, Wireless Remote Control Toys, and Wireless Remote Control Cars on the U.S. Amazon Site - FCC-ID Testing:

For wireless devices such as wireless remote controls and wireless remote control toys, Amazon U.S. requires FCC certification, which involves the following steps and preparation of relevant documents.
Product Classification:
Wireless remote controls, wireless remote control toys, etc., fall under low-power radiators and are subject to FCC Part 15 for devices that intentionally emit radio frequency energy.
Certification Process:
First-Time Application: Register for an FCC-FRN to establish a company profile and apply for a Grantee Code.

Product Testing: The product must undergo testing at an FCC-accredited laboratory to obtain a test report.

Document Preparation: Compile technical documents for the product, including detailed product photos, block diagrams, user manuals, etc., and submit them along with the test report to an FCC TCB laboratory.

Review and Certification: After the FCC TCB laboratory verifies all documents, a certificate is issued, and an FCC ID number is authorized.

Testing Items:
Conducted Emission

Radiation Spurious Emission

Conducted Peak Output Power

Required Documents:
Application Form

Schematics

PCB Layout

Block Diagram

Operation Description

User Manual (including operating temperature and altitude of use)

Label and Location

Certification Types 
Finished Product Certification: For complete wireless devices, including modules, mainboards, peripheral circuits, enclosures, etc.

Module Certification: Divided into restricted module certification and non-restricted module certification.

PC I Certification / PC II Certification: For handling changes to already certified products.

Amazon Requirements:
All radio frequency devices must comply with the Federal Communications Commission (FCC) and all applicable state and local laws, including registration and labeling requirements.

Provide accurate product information on the product detail page.

Recommendations:

Before applying for FCC-ID certification, confirm whether the product meets the requirements of Part 15 or Part 18.

Contact an experienced certification agency or testing laboratory to ensure all documents are prepared and testing is passed smoothly.

Maintain communication with the FCC TCB laboratory and promptly update any changes to the product information.