This is a cut/paste from another post. I noted that my "D" light (Drive) was flickering while I was driving. When it did that the cruise control dis-engaged. I adjusted the shift cable, the "D" light stopped flickering and cruise control is working fine. Google Toyota Electronic Transmission Checks and you should find a document with a section to "Inspect and Adjust the Shift Cable". There is a basic diagram on it. I couldn't get it to adjust using their directions so I tried this with the help of my 8 year old.
The shift cable on the Highlander is located under the battery, about an arm's length down. I removed the battery restraint to give better access for my right arm. You'll need a 12mm socket, the small version works good. Place the vehicle on a flat spot and engage emergency break. Locate the shift cable, there are two bolts. Loosen the left bolt, don't remove. Having another person (8 year old) help in the car is great. Turn on the power but don't start the car. Shift the transmission to Drive. Return to the shift cable and slightly adjust/rotate the arm until the 8 year old tells you the D light is staying lit. Tighten down the bolt. Check Park, Reverse, Neutral, etc. Lights should work OK. I couldn't get the the L light to come on but the transmission still engages. Test drive. Cost = your time. Help from the 8 year old, priceless.
Friday, November 13th, 2015 AT 7:44 PM