2016 Toyota Highlander: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 14 owner complaints for the 2016 Toyota Highlander that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11626493 (filed 11/20/2024): “The contact owns a 2016 toyota highlander. the contact stated that while the vehicle was parked, the trunk power switch failed to function as intended. the contact stated that the trunk power switch was enabled to unlock, however the trunk door did not unlock. the contact stated that the trunk power…”
- NHTSA complaint ODI #11561849 (filed 12/26/2023): “2016 toyota highlander le model v-6 cylinder. the fuel pump runs after engine has been turned off for several hours, even up to as many as 8 hours. this situation can be heard in a closed in garage, in the completely quiet of night time, and at multiple times during the same time period. it h…”
- NHTSA complaint ODI #11512162 (filed 03/16/2023): “Description of problem (electrical issue affecting multiple systems): engine shuts off while driving. all instrument/electronic displays shut off or flicker while driving. steering wheel locks and vibrates. liftgate does not open. vehicle cannot be unlocked with fob. vehicle does not start. may sta…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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Sources
Page last updated .