TRAC light
Thread Starter
Pit Crew
Joined: Aug 2007
Posts: 188
Likes: 6
From: ca
TRAC light
about 5 seconds after the car is started there is a whirring sound (sounds like an electric drill) behind the dash/engine bay and 7 seconds later it stops, then the TRAC light comes on. Does the TRAC system use a pump for pressure build up or maybe the ABS pump is linked with the TRAC system? What is the round motor right next to the M/C that points down at 45 degrees. I think that is where the noise is coming from. It does not affect driving and the ABS light never comes on....?
Lexus Champion
Joined: Jan 2014
Posts: 2,089
Likes: 52
From: illinois
there is an ABS accumulator right in front of the brake booster/master cylinder, that's probably what's making the noise, you might be low on brake fluid or the ABS system might need a bleed. you can find how to bleed the ABS system, it has its own bleeder valves.
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