Add an aftermarket mono amp and 10" sub to factory system 2001 Lexus Ls430

Question edited for clarity.
Question moved to Lexus LS430.

Check out the videos. There appear to be issues with the unit.

https://www.google.com/search?q=2001+lexus+LS430+mark+levinson+cd+playing+slow

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You must have the dealer scan the system with a special tool to see what is causing this unwanted activation of the vehicle stability control system.

If you have to add, you have a leak that needs to be repaired

Adding will just leak out again & pollute the atmosphere

2002 Lexus ls430 check VSC message

The gas your talking of is Freon 134a bought in 1 pound cans with a kit to allow you to regfill the system using the kits low pressure port connector and install a 1 pound can to see if all is well before you add too much more.......the whole system usually holds only 2- 2-3/4 cans empty.

$115 @ eBay
Item number: 250588086946

Cross over to

LEXUS LS430 04 (130 amp), 5 spd
LEXUS SC430 03-09 (130 amp)
LEXUS SC430 02 130 amp
LEXUS LS430 01-03 (130 amp)

go to crutchfield.com they have install videos

There is a clip that pries up with small flathead screwdriver. The harness and bulb are held in lens with a plastic ring that screws on and off.

go to auto zone, advanced autoparts, or a certified mechanic and ask if they can reset the codes, it should be free

the O2 sensor for bank one sensor one is located between the catalytic converter and the engine in the exhaust head pipe. see photo of your engine cylinder layout, the sensor u want to replace is the one at the cylinder #1 bank on right.