Where is the mercedes low side ac port? - 1993 Mercedes-Benz Mercedes Benz 400 Class

USA are you or Europe???? hint cars not the same.world wide.
Mercedes-Benz ( the makers here have no service manuals sold to owners) <<< makes repairs hard and expensive.
R12 OR IS CAR UPGRADED TO R134A OR R1234?

well it has 2 caps on the port. so 2 there are
there are 2 lines there, one is huge one is small
one side is called low side, and the the other is high side.
best is not touch the 300PSI (21 BAR.) SMALL LINE TUBE.
do not attach a walmart R12 can here or it will explode. in the face, OK end safety rant1, and where goggles.
the low side is about 10X LESS ABOUT 30 PSI
THE R12 RETURNS HOT AND IN GAS FORM. USING LARGE TUBE.
THE COMPRESSOR COMPRESSES THE GAS BACK TO A LIQUID STATED, AND SEND THIS LIQUID TO THE CAB EXPANSION VALVE TO GET COLD.

ONLY MESS WITH THE LARGE LINE , PORT
R12, IS FACTORY PORT,

THIS IS ORIGINAL 1999, WHAT IS THERE NOW I'VE NEVER A CLUE BLINDED IN A TEXT BOX. HERE.. MESS ONLY WITH LOW SIDE. OR BOOM,
THE HIGH SIDE CAN EVEN HIT AND EYE AND BLIND YOU.
EASY. GOOGLE ARE NECESSARY.

IN REAL SHOP THESE 2 ARE CONNECTED TO A TOOL CALLED A MANIFOLD. AND IS USED IN A SAFE MANOR.
A SKILL TECH TRIES NOT TO INTRODUCE AIR TO THE LOOP
AND DOES SO PURGING LINES IN THE MANIFOLD FIRST.
AIR IS BAD, BAD NEWS. (AND AIR IS EVERY WHERE)<LOL

A/C is cold or hot?

The charging port is in the low side AC line from the AC compressor on the engine, the low side line is the larger of the two lines coming from the AC compressor.

You need to have the refrigerant charge level checked, it sounds like it is low. You Need a set of AC pressure gauges to do this testing. If the system has a low charge the pressures will be very low in the low side testing port.

yes it could be a low refrigerant level. the compressor have a safety shuttoff, when the refrigerant level is to low they will not come on. try adding a can or two of refrigerant to the low side port normally the low side will have a blue cap on it or a L. if this is the problem you will see the compressor clutch engage and start spinning.

open engine hood its at the right front on the ac condenser it's covered by black plastic flap open the little flap you can see the low pressure valve in it.

start at ac pump and follow the lines/hoses off the compressor the large line is the low side with a small service port the high side srvice port is on the small line/hose it is the large port(and they could be on the compressor

One should be by the drivers side strut mount and the other up by the Aux fan in front under grille.

hello,good day,you have a 210 model with v 8 engine,your high pressure connection is located at front of your condenser,beside your ax.fan,then your low pressure connection is located at engine walling near your vacuum hose for brake booster,right side ,standing in front,ty

the low side charging port is near the AC Accumulator/Reciever dryer cannister in the larger of the 2 AC lines.