What does the Volkswagen Tiguan 00446 fault code mean?

[AmirFitz]

Volkswagen Tiguan 00446 fault code indicates low voltage function limitation. The reasons for low voltage function limitation are as follows: Prolonged use of in-car electrical appliances: Using in-car electrical equipment such as radio, DVD, or air conditioning for extended periods while the engine is off. Forgetting to turn off car electronics: Forgetting to turn off car electronics and interior lights after turning off the engine, or using car chargers and GPS. Frequent car starting: Frequent car starting. The battery lifespan is generally around 3 years, depending mainly on driving habits. With proper use and maintenance, it can last more than 4 years. Improper use and maintenance can lead to early damage within a few months.