[bigedd51]

Ok not sure if this has been asked yet but I just bought a used 05 Sequoia Limited 4wd with 83k miles. It runs and drives excellent but when you get on the highway I hear a beeping noise that sounds like an alarm coming from under the dash. However when I speed up more it turns into a solid tone. The speeds vary on when it will begin but usually between 65-70 then turns into a solid tone by 75 mph. This is very annoying but it drives normal and no lights come on in the dash when this happens. Please help. Thanks

 

[czechm8]

Is there some after market speed monitor installed? Maybe an after market NAV unit that monitors speed?

Sent from my Galaxy Nexus using AutoGuide App

 

[turboguyjr]

Is there some after market speed monitor installed? Maybe an after market NAV unit that monitors speed? Sent from my Galaxy Nexus using AutoGuide App

Did find out what the problem was I have the same year with over 130k and it does that.