Another 2 pictures to identify for 560SEL 1989
 

On my 560SEL 1989 I need to know what are the purposes of them.

Picture 1 is located on the left side of engine near the battery.
Picture 2 is located on the right side of engine near the fuse box.

Thank you : ))..

Sorry, they are just not clear enough for me.

The first picture is the diagnostic connector. OF course on that car only the SRS & A/C/C systems have diagnostic capabilities.

Second picture looks like the starter wiring connector.

M.B.DOC, can I use the diagnostic connector to reset the SRS?

About the starter wiring connector, do u mean to start the engine?

Sorry for asking too many questions.

That system is analog! THAT is the only way to reset the SRS here in the USA!

M.B.DOC, Which numbers I should short them to get the SRS reset?

You need to make an LED code reader to scan the codes from the SRS pin (#5 for the 8 pin module on the w126 and w201) once you've read the codes you can erase them and see what comes back.

Here is a basic schematic for the LED code reader:

+ (pin 8 or battery) ----- (+) LED (-) ------- SW ----- (-) (pin 1 or battery gnd)

From the - side of the LED that is connected to the momontary switch go to pin 5 (or any other pin for diagnostics)

To read the code, with ignition on (engine off) hold down the switch for 2-3 seconds. Release - count the number of blinks on the LED. Repeat until the same code is read.
To erase code, first read it, then hold down the switch for 8-10 seconds. Each code must be read then cleared individually (there is no clear all).

Sometimes to clear codes you have to turn the ignition off then on again between clearing separate codes.