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Other or unknownPart report

2020 Toyota 4RUNNER Other or unknown Problems

Complaints
9about this part
Share
27%of 33 total for the year
Median mileage
4,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 9 complaints about the other or unknown of the 2020 Toyota 4RUNNER, 27% of the 33 complaints for this model year. Where a mileage was given, the median is 4,000 miles. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The 4RUNNER struck a vehicle that ran a red light. The 4RUNNER was at approximately 35 miles per hour and struck the other vehicle, a nissan altima side on with enough force to propel that vehicle two lanes into another vehicle. The airbags failed to deploy on the 4RUNNER but did deploy on the altima. The roads were drive and visibility was clear. Injuries to the 4RUNNER driver included: head from contact with grab bar above drivers door, neck, back, wrists, fingers and arms. Altima driver had to be removed by paramedics and rushed to the hospital. …”

NHTSA complaint #11318897, filed 2020-03, 4,000 miles

“Thirteen months ago I purchased a 2020 4 Runner from Parker Toyota. Last week my sunroof exploded for no reason, there were no rocks or debri that caused this. This is clearly a manufacturers defect of the glass used. I am thankful I wasn’t covered in shattered glass or worse, cause an accident. The picture shows my shattered sunroof, it has tape holding it together so it didn’t cave in on me.”

NHTSA complaint #11435369, filed 2021-10

“I have attempted to use the SOS button 4 times in different days and in different locations, only connecting once and the rep. claimed she couldn't hear me that only time I connected. The system causes premature battery drain (even while the car is off, it draws power) and doesn't work in its intended way as a safety/rescue tool. This is an expensive feature that fails to work while locked in with an inferior cellular service provider through an exclusive contract between Toyota and AT&T.”

NHTSA complaint #11523940, filed 2023-05

“I was driving down the road and heard a Loud bang. When I got home I was looking for the source and there was a big hole in the sunroof from the sunroof shattering. There was no contact from anything the sunroof just shattered on its own.”

NHTSA complaint #11444957, filed 2021-12

“While I am driving, I smell something like exhaust or sulfur inside car. I could only smell it when the car is going over 70 miles, RPM is over 2500 (hard acceleration) , and when all the windows are closed and recirculate cabin air is on.”

NHTSA complaint #11319617, filed 2020-03

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2026229%
2025915%
2024220%
20231236%
2022821%
202126%
2020927%
20191218%
2018915%
20171439%
20161822%
20151416%
20141114%
20131028%
201266%
201196%
201085%
200929%
20081213%
20072114%
20067820%
20056816%
200412118%
200311116%
20023214%
20012514%
20006012%
19993711%
1998166%
1997218%
1996127%
199595%
199446%
199023%
1988111%

Other parts of the 2020 Toyota 4RUNNER

Air bags
5 complaints
Brakes
5 complaints
Steering
4 complaints
Suspension
4 complaints
Back-over prevention (rear camera)
3 complaints
Forward collision avoidance
3 complaints
Exterior lighting
2 complaints
Body and structure
2 complaints
Wheels
2 complaints
Electrical system
1 complaints
Electronic stability control
1 complaints
Fuel system
1 complaints

← All problems reported for the 2020 Toyota 4RUNNER

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology