The issue described involves the vehicle requiring several seconds of cranking before it starts, particularly during cold mornings. This problem is more pronounced after the vehicle has been sitting for an extended period, such as overnight, indicating a potential issue with the fuel system or ignition system. Once the vehicle starts, it operates normally for the remainder of the day, which suggests that the issue is related to the initial conditions at startup rather than a persistent fault affecting overall engine performance. Extended cranking times can lead to excessive wear on the starter motor and battery, reducing their lifespan.

The likely root cause of this issue could be a failing fuel pump, a weak battery, or problems within the ignition system, such as worn spark plugs or a failing ignition coil. A weak fuel pump may struggle to maintain the required pressure in the fuel rail upon initial startup, especially in colder temperatures where fuel viscosity increases. Similarly, a weak battery may not provide enough power for the starter motor to turn the engine efficiently. Worn spark plugs or a failing ignition coil can lead to poor combustion during the startup phase. Ignoring this issue could result in a non-starting vehicle, increased wear on the starting system, and potential for further damage to the fuel or ignition systems.