Should I replace the battery at the 4S shop or do it myself? I'm torn.

I replaced the LED headlights, and now the headlight adjustment doesn't work. Does anyone know if this will affect the car? Should I go to the 4S shop to fix it?

I want to replace the spark plugs myself, but I'm not sure where they are located. How do I replace them?

Are there no more 4S shops now, so should I go directly to a repair shop for maintenance?

Where should I go for maintenance? Do I need to make an appointment, or can I just go directly to a 4S shop like with traditional cars?

Do I have to go to the 4S store to replace the small battery in the car? Any advice from fellow car owners (EHS9)!

Hey fellow car enthusiasts, what should I do in this situation? I've been to the 4S shop to update the software and replaced the water pump and fan, but the problem still exists. [crying][crying]

I'm torn between buying the Toyota Alphard Executive version or getting a Mercedes Vito and customizing it myself.

Should I replace the battery at the 4S shop or do it myself? I'm torn.

This car has been abandoned by the manufacturer, and Dongfeng Fengxing is about to go bankrupt. What should everyone do if they can't find a 4S shop? Do you usually get maintenance at the 4S shop?

Hey guys, the 4S shop is charging 138 for the air filter and 88 for the cabin filter. I didn't buy them. What brand should I go for? Or should I stick with the 4S shop's original filters? I'm hesitant to buy online, worried about fake products.