Lexus battery is there a specific replacement battery recommended for the ls 430 2002 model?

More than likely the battery needs to be charged or replaced. If the battery is over five years old this is a strong possibility that it is bad. AAA will come to your location and test your battery, and charging system for free, if you are a member. They will also replace the battery at your location at a costs. I recommend that you become a member of AAA, as one towing, or service call more than pays for the annual membership fee.

Are there any warning lights on in the dash, may a security warning light? If so you will need to reset the security system, refer to the owners manual or callthe local Lexus dealer for instructions.

The radio anti-theft has locked itself out. You need to go to your local agent with ID and they will check your radio serial number and be able to give you the correct unlock code. (Make a note of this for future ocassions).

Timing belt...Lexus recommends replacing at 90K.

Disconnect the battery.
Disconnect the wires from the starter.
Unbolt & remove the starter.
Bolt the new starter into place.
Connect the wires to the starter.
Connect the battery cables.

Usually not. Disconnect negative battery terminal, then positive. Next remove battery hold down (type is specific to car model). Battery then lifts out and replace with correct new one. Install is reverse.

have the peddle cable replace

inside rotor have a log with thickness measure (around the wheel nut holes),and aftermarket rotors and pads RAYBESTOS is good

this sounds silly but you may be able to reset by removing the dome lite fuse and reinstalling, Lexus seems to use that circuit on some early models

always put the black (ground) on first and disconnect it last.