What are the reasons why a smart car cannot start?

[Eric]

It is due to a depleted battery. Below is the relevant introduction: Battery: A battery is a type of cell, also known as an accumulator, which works by converting chemical energy into electrical energy. The battery commonly referred to is a lead-acid battery, which mainly uses lead and its oxides as electrodes and a sulfuric acid solution as the electrolyte. Misconceptions: When the liquid level is low, people often replenish it with electrolyte or drinking purified water instead of the required distilled water. Adding electrolyte containing sulfuric acid will increase the concentration of the electrolyte inside the battery, leading to phenomena such as boiling and acid mist, severely affecting the battery's lifespan. Using drinking purified water instead of distilled water is also problematic, as purified water contains various trace elements that can adversely affect the battery.

[CaydenDella]

I've encountered quite a few situations where my smart car wouldn't start over the years of driving. The most common issue is a dead battery, especially in winter when low temperatures cause significant battery capacity loss - you either hear clicking sounds when turning the key or get no response at all. This often happens when you forget to turn off headlights or electrical devices after parking, draining the battery. Check if battery terminals are loose and clean off any dirt. If it's a remote key issue, try replacing the battery or holding it closer to the start button. Starter motor failure is another possibility - you'll hear grinding noises but the engine won't turn over. A failed fuel pump gives no sound at all, requiring fuel system inspection. I recommend regularly monitoring your vehicle's condition and checking the dashboard for warning lights before trips. Addressing abnormalities early can prevent roadside breakdowns.

[DelLeonardo]

My smart car couldn't start last week either, it was really stressful at the time. The possible reasons could be insufficient key battery power - try bringing it close to the start button but got no response; or the anti-theft system was triggered - try removing and reinserting the key several times. A blown fuse could also cause circuit interruption, check the corresponding starter fuse in the engine compartment fuse box. If the engine stalls immediately after starting or shakes violently, it might be due to carbon buildup clogging the spark plugs. Another possibility - if the gearshift isn't in P position or the brake isn't pressed, the smart start function might get stuck. It's recommended that owners carry an emergency jump starter with them - stay calm and try self-rescue first when problems occur, calling a tow truck is more reliable only when all else fails.

[KylieFitz]

From a maintenance perspective, there are several key points regarding SMART vehicle startup failures. The most common issue is an aging or depleted battery—if the voltage tests below 12 volts, replacement is necessary. A faulty starter motor will only produce clicking sounds without engine ignition. Problems with the ignition coil or crankshaft position sensor can cause the engine to lose synchronization signals. Fuel supply issues, such as a failed fuel pump or clogged filter, are also frequent culprits. Electrical control system failures, like a defective control module, may result in complete silence. It's best to use diagnostic tools to read error codes for quick problem identification, avoiding unnecessary disassembly that wastes labor hours.