How long can the aging wiring harness last? - Answer in three sentences: "Scenario - Indicator - Countermeasure"

Scenario lifespan

• Passenger car engine compartment: 125 high-temperature aging test, 1000 hours ≈ 2.6 years

; The sheath may crack and insulation may degrade after 3 to 5 years; it is recommended to replace the whole cable after 5 to 10 years.

• Chassis/body: low temperature, service life of 8~12 years.

• New energy high-voltage wiring harness: 800 V platform + liquid cooling, with a design lifespan of 15 years, but it is recommended to conduct a re-inspection every 10 years or after 160,000 kilometers.

Aging "red light" indicator

Any occurrence of sheath cracking, copper wire blackening, insulation resistance < 100 MΩ, or joint temperature rise > 30 K is considered as "failure to withstand".

Extension measures

• Cleaning the engine compartment and applying wire harness protectant annually can extend its lifespan by another 3 to 5 years.

• If aging is found, only the part needs to be replaced, without the need to replace the entire vehicle's wiring. The cost ranges from 500 to 6000 yuan, depending on the model of the vehicle