My Volvo S40's battery seems fine. Why does the electrical system show a fault, and it starts smoking as soon as I start it? We've checked but can't find what's wrong.

My 06 S40's air conditioning sometimes doesn't cool. It has refrigerant, and sometimes it works. The technician said it might be an electrical issue, while others say it could be a problem with the AC motor. Could anyone help me figure out what's wrong?

My Volvo S40's battery seems fine. Why does the electrical system show a fault, and it starts smoking as soon as I start it? We've checked but can't find what's wrong.

How do you start the ignition of a Volvo S40? The key looks like plastic. [shy]

Do you guys have issues with the passenger airbag showing error codes? Mine was fine in the morning, but in the afternoon, it started showing an error code. Have you experienced this?

I've only had my car for ten days, and it won't start. Checked the battery, and it's fine. Not sure what's wrong.

Is there an issue with the electrical system in the 2017 MG GS automatic model, as it shows faults during summer after two years of use?

Why does the car show a transmission fault warning during a cold start, but it goes away after waiting and restarting?

Volvo S40 2.0 Smart Edition showing a "Power System Emergency Maintenance" alert, what does this mean? Is it serious?

After four years with the X90, it seems like there's always something going wrong with the lights—fix one and another breaks. I only added a dash cam to the electrical system.

Is it a problem with the ignition switch if the Volvo S40 key is turned to the second position, but there's no power and it reports an engine anti-theft system fault? I changed the ignition switch, and now it's sometimes good and sometimes bad. Sometimes the dashboard lights up, sometimes it doesn't, and sometimes it even starts automatically.