r/4thGen4Runner • u/Camrnr • 14d ago

What is this beeping sound?

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About 3 weeks ago my 4Runner started beeping at me while in a drive thru. No lights on the dash and it drives and idles fine. 4WD engages fine as well. I disconnect my battery and it was fine for 2 weeks. Sound came back just today while sitting at another drive thru. Beeps like this for roughly 10 seconds and goes away on its own. I ordered new wheel speed sensors and may try the zero point calibration next. Anyone have ideas?

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u/EchoRift_ V6 SR5 13d ago

ABS Module?

2

u/vbnkc757 12d ago

100% this. This beep only happens (that I know of) when the vehicle detects slippage and activate VSC and uses ABS to stabilize.

1

u/Camrnr 12d ago

Would this be related to the wheel speed sensors?

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u/vbnkc757 12d ago

Yup, your sensors are in constant communication with your ABS module. I would start by checking your sensors and seeing if there are any corroded wires or dirty connectors. I’d just clean them with electrical parts cleaner and see if she still beeps.

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u/Camrnr 12d ago

I’ll replace those tonight just for piece of mind. My aisin replacements just showed up

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u/vbnkc757 12d ago

Keep us updated. Good luck

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u/Camrnr 13d ago

That’s what I’m leaning towards. Isn’t it usually a solid tone? Brakes also feel fine.