This content was compiled automatically and has not yet been reviewed by a technician. For reference only.
For reference only. Always confirm part numbers and procedures for your specific vehicle.
Keys and Anti-theft
CS75 PLUS key-fob problems: check battery and interference before replacing the key
The Russia CS75PLUS NEW handbook covers remote-control conditions, the 3 V CR2032 battery and replacement precautions.
CS75 PLUS key-fob problems: check battery and interference before replacing the key
If a CS75 PLUS key fob does not respond, or works poorly only in a particular parking location, do not immediately buy a complete key. Check battery condition, operating conditions and surrounding interference before deciding between battery replacement and further inspection. A failure to unlock alone does not establish the cause.
A low battery is only one listed possibility
The CS75PLUS NEW handbook on the Russia website lists conditions that can prevent remote operation: low key-battery charge, excessive distance, signal blockage by vehicles or objects, high or low ambient temperature, and nearby radio sources. [Factory remote-control guidance][S17]
Record whether the key never responds or its behaviour changes with location. If it is close to a phone, computer or other electronic equipment, separate them as advised in the handbook and observe the result. Changes with the operating environment are repair clues, not proof of failure in the key or a vehicle controller.
The handbook gives a specific battery specification
The illustrated key fob requires a new battery with the same specification as the original, marked 3 V, CR2032, installed with the correct polarity. [Key-battery page][S17]
For buyers, this is more specific than asking whether a button cell fits. Match the specification to the physical markings; similar appearance cannot replace model confirmation. Do not extend this handbook's specification to every CS75 PLUS key.
Avoid circuit-board damage during battery replacement
The handbook warns against touching the circuitry because static electricity may damage the board. Reversed battery polarity may also cause damage. If the rear cover does not slide open normally, it recommends an authorised service point using the appropriate tools rather than forced removal. [Factory replacement precautions][S17]
Greater prying force does not make replacement more successful. Once replacement is confirmed, someone familiar with the key's construction should handle it. Continued non-response with a new battery requires further investigation; a new battery alone does not justify ordering a complete key.
A low battery and a lost key are different requirements
The same page separately addresses key numbers and obtaining a new key from an authorised service centre after loss. [Key-management guidance][S17] Low charge and key loss should not be combined into the same purchasing requirement. A button-cell designation cannot prove complete-key compatibility or successful matching.
Verification and parts enquiry
This article is limited to the key shown in the Apr 2025 CS75PLUS NEW handbook on the Russia website. No public data were available for other key versions, complete-key OE numbers, frequency, matching procedures or cross-market interchangeability. [To be verified] Check compatibility using the VIN, physical markings and local factory parts catalogue.
For confirmed key-battery and related component needs, use the parts enquiry page.
[S17]: https://changanauto.ru/storage/model/manual/CS75PLUS_4gen_manual.pdf