2018 Honda Odyssey: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 263 owner complaints for the 2018 Honda Odyssey that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11772836 (filed 10/21/2026): “It started back in july 2026; i had a warning pop up that some functions aren’t available and to clean front windshield camera. we did. still received the warning. sometimes it’s there and sometimes it’s not. i can go down the highway and it will come up and then a few miles later it’ll turn off and…”
- NHTSA complaint ODI #11772840 (filed 10/21/2026): “On october 14/15, 2026 it rained. at approximately 12:25pm on october 15, 2026 my power lift gate stopped working. it wouldn’t open with any of the controls. upon further inspection we noticed the control module had water damage. we replaced the module on october 21,2026. it is still having issues. …”
- NHTSA complaint ODI #11772553 (filed 10/20/2026): “In xxx, the power tailgate on my 2018 honda odyssey stopped working. i took the vehicle to authorized honda dealer fred beans honda of [xxx]. the technician documented in writing on repair order #xxx (xxx): "there is water leaking onto the power tailgate control unit. technician found the water leak…”
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 .