Nissan Qashqai e-POWER 2023 Owners Manual
10.1.6. Underbody
In areas where road salt is used in the winter, the vehicle's underbody must be cleaned regularly. This will prevent dirt and salt from building up and causing underbody and suspension corrosion.
Before the winter period and again in the spring, the underseal must be checked and, if necessary, re-treated.
Owners Manual