OK. It started today when my VSC on off was on the dash, stuck in park, etc. I replaced the #15 fuse and I thought all was fine.....WRONG!!
Now the brake lights wont come on when demanded and I made a squeeling sound like an alarm and batt light came on. The 3rd brake light on the wing still works. It also popped the #3 tail light fuse in the mist of all this and I replaced it as well. Checked the wiring to the Tails and everywhere else.....HELP!!
Is it a batt issue?

UPDATE!!: Jump the car with a box, Volts are 13.2-13.5 while running. I think the ALT is good and battery is bad. My brake lights do not work still!! Everything else does...no brake lights. These are LED tails. Car is a 98GS400

 

Exact reason why I won't buy LED tails.

 

^ Depends which ones.

 

I agree with you. "You pay for what you get"

 

I dunno what they are...they were on the car. Looks like It has the "thinner clears" at the bottom.

I cant figure this out. Help please. If i press the brakes off and on, sometime it throws on the VSC lights and sounds the alarm and goes off. WTF!!!!!!! Where do I start to check?

 

These could be the reasons:
1. TAIL Fuse
2. GAUGE Fuse
3. Taillight Control Relay
4. Light Failure Relay
5. Light Control Switch
6. Wire Harness

The gauge fuse is in the drivers side junction block panel, I think #11 but this is for a 2002 430. Don't know if it is the same for your car?

 

Where are the relays located? THE 3rd Brake light is working, running lights are working on tails....just not brakes

 

^^^^ man you just need to bring your car up my way and we will go through the whole thing and nock out any gremlins you have. If the third brake light lights up with depressing the brake pedal then its not the sensor. The tail lights and brake lights should be on the same fuse so if you have tail lights and no fuses blown that rules that out. How about blinkers do the blinkers work at all on either side since thats usually the function of the brake light portion of the tail light too. If the blinkers work then its clearly a wiring issue starting at the drivers side as I believe the harness runs from left to right. let me know man call me if needed 321-890-6215 then you wont have to wait for answers here.

I have LED tails and only issue is fast blinker which I believe in my case more attributed to lack of side marker blinkers upfront. Other than that mine work perfect super bright also.

 

are both inner and outer brake lights not working?

The front side marker doesn't blink.

 

taillight relay is in the same drivers side panel

 

I think Ive narrowed it down to a bad or fudged up alt that must or surged, blew the fuse and fried part of the resistors for the LEDs. Gonna probe it out.....results to come.
Nice talking with ya ENTRYSPEED.

 

*&#*&$##@^$* Still no luck! Fuses, relays, probing the crap out of the entire wiring harness. I just dont get it

 

Light failure control box is bad. Took it apart and found the broken trace on the board. Jumped the break and everything worked as needed. Any ideas to find one at a resonble price or how to repair this?

 

jason there is a thread in the classifieds that says parting 02 gs430 entire care. Maybe he can sell you one of these. I asked him for a part via email as he requested and he answered me fairly fast. GL and let me know if you want that website that shows everything I was telling you last night.

 

Pm that link or email it. Thanks again for all your help!!

Ill will posting up a DYI on this sometime soon with pics. Not common but could save all of us some $.