Looking under the hood at the engine, it is located on the left side, back towards the firewall. It is right next to where the positive jump start terminal is located.
The port closest to the firewall. Black twist off top.
To recharge the air conditioning system in a BMW 740iL, first, locate the low-pressure service port, typically found on the larger diameter aluminum line. Connect a refrigerant gauge and a can of R134a refrigerant, ensuring the engine is running and the A/C is set to maximum. Monitor the pressure readings while adding refrigerant until the system reaches the recommended levels. Always ensure to check for leaks and consider consulting a professional if you’re unfamiliar with A/C systems.
To recharge the AC on a 1998 BMW Z3, first ensure the vehicle is off and locate the low-pressure service port, typically on the larger diameter AC line. Use an R134a refrigerant can with a pressure gauge; attach it to the port and follow the instructions on the can. Start the engine and turn the AC to the maximum setting, then slowly add refrigerant until the pressure gauge indicates it’s within the recommended range. Monitor the system closely and avoid overcharging.
To recharge the AC on a 2003 BMW Z4, start by locating the low-pressure service port, typically found on the larger diameter AC line. Attach a refrigerant refill kit to the port and ensure the engine is running with the AC set to the maximum cool setting. Follow the instructions on the refrigerant can to add the appropriate amount of refrigerant, checking the pressure readings periodically to avoid overcharging. After recharging, check for any leaks and ensure the AC system is functioning properly.
If your E46 is equipped with a tire pressure monitoring system, the reset button is located on the control panel below the radio.
The 2001 BMW X5 uses R-134a refrigerant for its air conditioning system. When servicing or recharging the system, it's important to follow proper procedures and use the correct type of refrigerant to ensure optimal performance and avoid damage. Always check for leaks and ensure the system is in good condition before adding refrigerant.
The 2001 BMW 325 OBD 2 port is on lower dash next to kick panel; pull cover down, BMW ICOM A / ICOM A2+B+C is the Dealer Level BMW Auto Diagnostic Tool, ICOM A2 is the latest BMW Group Service Tool for ECU programming, diagnosis, coding and complete system checking, from vipprogrammer.com
If it helps the fuel pressure at the fuel rail should be 3.3-3.7 bar with the engine idling. The holding pressure after 20-30 minutes should be, system pressure - 0.5 bar.
that's a big negative
Guessing and following advice from others is not the correct tire pressure. The correct tire pressure for your BMW is listed in the owners manual and on the drivers door post. That is the pressure recommended by BMW who designed your car and know what pressure is best.
That is your TPMS warning light which stands for "tire pressure monitoring system". It comes on to let you know that the air pressure is low in one or more of your tires.
You do not mention what model this is on ? If I had to guess I would say the Evaporator is leaking