Technical Service Bulletins according to the NHTSA. Check service book for:
Most of the 2014-2019 Toyota Highlander problems are well-known and most were rectified under warranty or recall. A few minor issues popped up over the years and while these aren't widespread enough to deserve their own sections in this report, we mention them here.
Some minor problems worth mentioning include:
- Facelift 2017 Toyota Highlander windshield-cracking problems apply to other years as well and serve as a reminder of how complicated cars have become. If you've cracked a windshield and need to have it replaced, keep in mind that you'll have to have the sensitive windshield-mounted camera and driver-assistance equipment recalibrated at your own cost.
- There is a 2014 Toyota Highlander airbag and safety problem recall dealing with an issue where the restraint systems might not restrain heavier passengers adequately in a crash due to being programmed with incorrect software.
- The third-generation 2014 Toyota Highlander 2.7's leak problems with water escaping from the cooling system in a few cars are also not commonplace enough to establish a worrisome pattern. Most used-car buyers shun the weak four-cylinder anyway, so it shouldn't present a problem.
- There were also some 2015, 2016, 2017, and 2018 Toyota Highlander power door lock problems, although this can also occur on 2014 and 2019 models.
- Oxygen sensors can go bad, triggering error codes such as P2195, P2197, and C1201. These cost between $350 and $550 to replace.
- Models with the JBL audio system can suffer from speaker rattles, vibrations, and buzzes. There are tutorials on the internet showing how to fix this problem at home.
- All engines can suffer from oil leaks at high mileages, but the V6 engine is especially prone to develop an oil leak at the cam position sensor's bolt hole.
As seems to be the case with many complicated modern cars, 2014, 2015, 2016, 2017, and 2018 Toyota Highlander electrical problems do occur but seem to have been mostly sorted out by 2019. It seems as though 2014, 2015, and 2016 Toyota Highlander AWD, hybrid battery, key fob, brake, console, voice recognition, mass air flow meter, and starting problems are all exceedingly rare. Likewise, in terms of the facelifted model, there doesn't seem to be any uptick in 2017, 2018, and 2019 Toyota Highlander AWD, hybrid battery, battery-draining, key fob, console, cruise control, panoramic sunroof, engine, start-stop, vibration, defogger, brake, or other mechanical problems either, with all these systems remaining relatively trouble-free. There is also no need to worry about 2017/2018 Toyota Highlander 2GR-FKS problems - this more powerful V6 engine is just a refined version of the reliable pre-facelift V6 and still a durable power plant.