CS35 PLUS fuse blows again: why a higher amperage rating is not the answer

CS35 PLUS fuse blows again: why a higher amperage rating is not the answer

If the same electrical device in a CS35 PLUS starts working again but its fuse soon blows, do not try a higher amperage rating. The cause of the failure and any circuit-repair need must be investigated. Keeping spare fuses does not replace that step.

Matching the specification is a factory requirement

The CS35-PLUS handbook on Changan's Peru website explicitly requires switching off the ignition and all electrical equipment before fuse replacement. The replacement must have the same specification as the original, otherwise electrical equipment may be damaged. [Factory fuse precautions][S10]

Fitting a higher-rated fuse is therefore not a manufacturer-approved way to make it last longer. Buyers should confirm the specification required at that position on the vehicle, rather than checking only whether the fuse fits or using another type because it is available.

A repeated failure requires investigation of the cause

The handbook's fuse-replacement procedure includes checking whether the fuse has blown, identifying the cause and correcting the problem. [Factory inspection procedure][S10] Replacing the fuse itself does not establish that the original cause has been resolved.

A useful repair description states whether the failure recurred in the same position or another position, which device was in use, and whether electrical repairs or accessory installation had recently occurred. These are investigation clues for the repairer, not proof that a particular controller has failed.

Identify the position without borrowing another trim's numbering

The handbook directs users to the diagrams on the relevant box covers for fuse and relay locations. [Location guidance][S10] Check the actual cover together with the applicable handbook. A photograph of another CS35 PLUS online is not a basis for copying fuse positions or functions.

This also helps distributors: the order should identify the fuse specification actually required. A device name alone should not prompt the supplier to invent a part number or rating.

Refer high-current circuits to the appropriate repair service

The handbook assigns high-current fuse and relay repair and replacement to authorised service points and prohibits unauthorised electrical-system modifications. [Factory service requirements][S10] Do not use bridging, bypassing protection or repeated trial replacement to test a guess.

Verification and parts enquiry

This article relies only on the handbook on the Peru website with a Dec 2018 foreword. No public data were available for trim-specific position numbers, amperage ratings, OE numbers or fault-to-circuit mapping. Ambiguous Spanish wording is not used to expand diagnostic conclusions. [To be verified] Compatibility and interchangeability must be checked using the VIN, actual box cover and local factory parts catalogue.

For fuses and related components with confirmed specifications, use the parts enquiry page.

[S10]: https://www.changan.com.pe/media/ufrdf243/new-cs35-plus.pdf