BMW 4 Series Convertible problems with misfiring for some time now

What should i do if my car is misfireing only when its cold. When i start the car when the engine is cold it misfires but when i have driven it a while and start the engine hot it doesnt misfire. What could it be causeing this misfire?

This could be due to a number of reasons. One common cause is a faulty coolant temperature sensor. If this sensor is not working properly, it can send incorrect information to the car's computer, causing it to provide an improper fuel mixture when the engine is cold. I would recommend starting by checking the coolant temperature sensor. If this doesn't solve the issue, it might be best to have a mechanic inspect your vehicle.

But the coolant temp is good when i messure it. Could it still be this sensor?

Even if the coolant temperature reading seems accurate, the sensor could still be faulty and sending incorrect information to the engine control unit, causing the cold misfires. However, if you're confident that the sensor is working correctly, you might want to check the fuel injectors next. Sometimes, a dirty or clogged injector can cause cold misfires.

Can you explain how I can best check the injectors myself? Do I need a special device for this? I have heard of workshops that offer such tests.

(Translated from German)

Checking fuel injectors can be a bit complex if you're not familiar with the process. It involves checking for leaks, performing a resistance test, and sometimes even using a fuel pressure tester. If you're not comfortable doing this yourself, it might be best to have a professional mechanic do it. They have the proper tools and knowledge to accurately test the injectors.

Hello , I'd like to measure the high and low pressure in Carly, but I can't find what section to look for in the live data. Thanks

(Translated from French)

In the Carly app, you should be able to find the high and low pressure readings under the "Engine" section in the live data. If you're having trouble finding it, try using the search function in the app. If you're still unable to locate it, it might be best to contact Carly's customer support for further assistance.

Hello, my battery is not charging, battery is heavily discharged. It came up yesterday when I was at the garage after picking up my car, after a long drive it said that the battery was no longer charging. What could be the problem?

(Translated from German)

The issue could be due to a faulty alternator, which is responsible for charging the battery while the car is running. If the alternator isn't working properly, the battery won't charge. I would recommend starting by checking the alternator. If the alternator seems fine, then the issue could be with the battery itself or the wiring. It's important to address this issue promptly as a heavily discharged battery can affect the vehicle's performance and could potentially leave you stranded.