How to fix air conditioner cold air?
My AC still blows air but the air is not very cold. Do I need to get a car repair place to put in new/more freon?

Volkswagen made a few adjustments to its Jetta lineup for 1997. Gone was the Wolfsburg Edition, while new to the lineup was the Jetta Jazz, which was geared toward music enthusiasts and equipped with special upholstery and an upgraded sound system with a CD changer. Similarly, the Jetta Trek was aimed at biking enthusiasts, and came with a roof-mounted bike rack, special cloth seats and instrument gauges, a leather-wrapped steering wheel, and foglights. A sporty Jetta GT was also added.
Still in the lineup were the stalwarts of the Jetta lineup, including the Jetta GL and the Jetta GLS, both powered by a 115-horsepower, 2.0-liter four-cylinder engine linked to a five-speed manual transmission, which was standard. The entry-level GL package came with bucket seats, dual airbags, power brakes, power steering, power door locks, tilt steering, and an anti-theft alarm system, while the GLS added cruise control, power heated mirrors, air conditioning, and power windows.
Also available were the Jetta TDI turbodiesel and the Jetta GLX, which was equipped with a 172-horsepower, 2.8-liter V6 engine and came with a full range of standard features, including a sunroof and anti-lock brakes. Leather seats were optional.
Drivers had mixed opinions of the 1997 Jetta. Some offered high praise for the car, citing its roominess, reliability, handling, and performance as positive points. Others were less than enthusiastic about their cars, noting a lack of quality and the need for numerous repairs.
My AC still blows air but the air is not very cold. Do I need to get a car repair place to put in new/more freon?
or cause my 1997 2.0 Jetta to run rough and cause certain codes to trip?
Ok so this is my first vw ever since I'm building my 95 Acura legend gs at the moment I bought this 1997 jetta gls 2.0 automatic sadly but it's my new get around. So when I don't turn the headlight witch to the on position the brake light go on an off when I hot the brake pedal like normal. Now When I turn the headlight switch to the on position the brake lights stay on as if I was pressing the brakes. Can anyone give me ideas as to what this can be I did go first being the pedal to check the little brake sensor it's not stuck as I read in another forum.
I had to change the battery in my car and now it wont turn over but everything else works. I think it is the security and if it is what do i do to unlock it. I already unlocked the radio.
Airbags
Dual front airbags
Audio System
AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: cloth
Tires and Rims
Wheels: alloy
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Mirrors
Exterior mirrors: power
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: cloth
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
CD changer: 6 · AM/FM radio · Remote CD changer location: in cargo area
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: cloth
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
AM/FM radio
Comfort Features
Steering wheel trim: leather
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Mirrors
Exterior mirrors: heated
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: cloth
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: cloth
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
Single disc in-Dash CD · Premium Brand: Bose · AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Steering wheel: tilt-adjustable
Mirrors
Exterior mirrors: heated
Roof
Moonroof: power
Seats
Front seat type: bucket · Heated: front seats · Upholstery: cloth
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Airbags
Dual front airbags
Audio System
Premium Brand: Bose · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Steering wheel trim: leather
Convenience Features
Multi-function remote: trunk release · Steering wheel: tilt-adjustable
Mirrors
Exterior mirrors: heated
Roof
Moonroof: power
Seats
Front seat type: bucket · Heated: front seats · Upholstery: leather
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent