Gas Engine Starting Problems: Troubleshooting Guide

Hello,

"On my Leon 1.6 16V, I have a problem where if I turn on the lights early, the car won't start on the first try after a longer period of inactivity (when the engine is cold)."
However, on the second attempt, it starts up immediately and without any problems.


I once read the error memory, and only one error code was found, and it keeps reappearing even after it's been cleared.

Address 08: heating/climate control.
01206 - Signal for ignition deactivation duration.
27-10 - implausible signal - sporadic.

What could it be? How can it be fixed?

"Autohaus X had already worked on the vehicle before, and recently performed a basic adjustment of the cold start system."

After that, it was gone for 5 days, and then it reappeared.

Okay, here's the translation:

"So please help."

It's possible that I'm not understanding you. You're expressing yourself in a somewhat unclear way.
What I'm reading suggests a general power supply problem. You should check the condition of the battery and measure the quiescent current. If this is too high, the battery will be heavily stressed and may not have enough remaining capacity to start the engine. I don't know why it works for you on the second attempt.
Also, it's also a good idea to check the ground connections in the engine compartment, as these can also be prone to significant oxidation, even in new VAG vehicles.

Okay, so the idle voltage is 12.5V.
The car is just a little under 2 and 3/4 years old.

and I'll try to explain it again.

Okay, so if the light turns on in the morning...
Then, on the first attempt to start, there was no chance of it starting (it just cranked and cranked).
Then, return the key.
and restart again.
and he comes immediately.

Okay, so now it's also happening when I'm riding without lights.
It actually turns on the first time.
But he's really struggling.

It's only available in the afternoons, never in the mornings.
It always starts perfectly in the morning.

I'm so frustrated with you. I don't understand you at all.

What exactly does it mean:

Okay, so if the light turns on in the morning...

Does the car have its lights on before starting?

Okay, even if I don't figure it out: Measure the quiescent current, check the ground connections. Even after 2+ years, a battery can be completely discharged.

Quote:

so the idle voltage is 12.5V

Ampere...

"Quote:"
Okay, so the idle voltage is 12.5V.


Ampere...



...probably not... here, the voltage was likely only measured... 12.5A of quiescent current would be "a little" too much .