Alarm + VSC TRAC, TRAC OFF, ABS, Emergency Brake Light On

Asked by Dec 18, 2017 at 01:11 PM about the 2004 Toyota 4Runner

Question type: Maintenance & Repair

The other day, about 10 seconds after starting my 2004 Toyota 4Runner SU
with a little over 181,000 miles on it, the VSC Track, Trac Off, ABS and
Emergency Brake light all came on, as well as a continuous alarm sound
(emitted primarily from the left-hand side of the steering wheel).

Turning the car off and back on did not help. Took it for a test drive to see how
it handled, and after about 15 minutes I noticed the brake pad locking up. I
had to press down hard on it for the car to slow down.

I turned the car off for about 2 minutes, started it again, and the alarm and all
those lights came back on, but after about 15 seconds it all stopped; the
alarm, the lights, and the brake was working just fine.

This has happened on two occasions, with about 5 days in between each

My local mechanic says it might be the ABS or PCM system failing.

As a side note, my check tire pressure and "MAINT" light have been on for a
few weeks now as well, but we've had a cold weather spell and I haven't had a
chance to check the tires, and I just recently had an oil change and assume
they just failed to reset the "MAINT" gage. However, I wanted to mention this
in case it's related to the issue with the alarm, brakes and other lights coming

Any thoughts and/or ideas on this is greatly appreciated!


6 Answers


check your brake fluid if low all those lights will come on, but not the tire monitor light.

Is this still happening?/. Just happened to my husband this AM. All the lights and the siren - went for a few minutes then it stopped and seems fine to him. Wondering if you had more repairs? Thanks!


are you entering the vehicle with remote or key?

1 of 1 people found this helpful.

cjsras: thank you for the tip about the fluid. I haven't checked it yet, but we haven't had this happened anymore... also, we have both the remote and key, and the two times it's happened it's been with both. Kens-toyota: it has been about 2 weeks since it has happened, so hopefully it were 2 isolated incidents. I was told by two private mechanic shops and a Toyota dealership that it could be isolated occurrences, or a sensor going bad, or the ABS or computer system needing repair. That latter would be the worst case scenario. I'll provide an update should this happen again. I appreciate the responses!


your welcome.

Great to hear that you didn't have occur a lot! Ours is using key. I called Toyota as well and he said because we had unusual cold temps this am it could of affected it. That we shouldn't worry. We are at 183,000 so interesting that it's happening to us both at that Mileage!hopefully it's all a fluke for us both! Thanks!1

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