What are the reasons for the Mercedes-Benz E300 not responding when starting?

[DianaMarie]

Reasons why the Mercedes-Benz E-Class does not respond when starting: 1. The gear is not returned to P: For automatic transmission vehicles (AT, CVT, AMT), manufacturers preset this mode and repeatedly emphasize in the manual: ensure the gear is in the P position when starting the ignition. 2. Key battery is low: Although the key is in the car, the instrument panel always displays 'key matching error'. This situation is likely due to the smart key's battery being low, and the starting system cannot detect the weak radio waves emitted by the key. It is recommended to place the smart key on the start button and press the button to start. 3. The battery is dead: Failure to start may be caused by the battery being drained due to reasons such as leaving the headlights on for a long time or the battery's lifespan expiring. Generally, the battery should be replaced in time according to the maintenance manual. 4. No antifreeze added: Some car owners add water or inferior antifreeze to the car, resulting in the entire waterway being frozen in extremely cold winter conditions, causing the engine to crack, the car's water pump to fail to operate, the car not to start, and damage to other engine components.