1994 BMW 525i How to troubleshoot the air conditioner.

For air conditioning to function properly there needs to be refrigerant in the system. I would start with checking the refrigerant charge. This work requires specific tools and equipment. From a safety standpoint, I recommend having an expert assist you rather than attempt the repairs yourself as there are high pressures to deal with and the possibility of personal injury is present. However, A/C gauges are available from the major parts suppliers as is refrigerant. A bit of study online might be very educational and I suggest caution when dealing with the unknown. Hopefully the issue can be resolved easily, please let me know your plan and we can see if there is someway to have this be a successful repair.

I will look to see what the possible solution for the E-34 body style could be and repost straightaway.