Typically, there are very few - if any - grease fittings - compared to previous years. Most of the lubrication point are 'lifetime sealed' such as ball joints or steering tie rod ends.
Often, the squeaky noise you are hearing may be due to dry suspension bushings - inspect them for excess wear, replace as necessary. If in good shape, then apply squirt of WD40 or other spray lubricant.

http://www.mann-hummel.com/.../HBYyDKP4.pdf

Does battery die after 15 min or does engine die. If engine dies a bad alternator, 95%

Check under the vehicle on the driver side below the seating area. The fuel filter is mounted on frame in the fuel line.

The low side is the larger diameter pipe.

First, try the owners or maintenance manual with the vehicle. Next, try the on-line manual sources, such as; www.manualspace.com for the maintenance schedule.

Did you already try to visit forums for your vehicle like http://www.benzworld.org/ Someone there might be able to post the exploded diagram on how to replace it.

You should verify the operation of your a/c compressor and its magnetic clutch. And check the condition of your a/c magnetic clutch relay.

Ух как вежливый

К сожалению, я в недоумении от того, что часть, так как только ракета-носитель я знаю, это тот, на тормоза, но у меня есть ссылки, которые могли бы выполнять свою роль. Стрелять их по электронной почте или позвоните им.

http://www.mbpartswarehouse.com/
http://www.eurobzparts.com/
http://www.dronsfields.com/

Sure, go to the dealer if you want to get the most expensive oil change you have ever seen in your life. Read your owners manual to identify what "service B" means, it also might say how to reset the message center. Service b actually means the oil and filter change and a complete look over for brake pad wear, rotate tires if needed, yadda, yadda yadda, etc, etc. Just a routine check of basics, no worries. The reset procedure is also printed in your owners manual, requires no special tools, just patience to understand the steps. Button pushing. Go to your local guy that you have had fix your other cars. he can change the oil in your 320 and likely rest the message center.

Any component has the potential to break at any time. Breakage, or failure - is not necessarily mileage-specific.
Aslong as the routine andrecommended maintenance is performed there should be few surprises.