2021 KTM 790 Adventure R Exterior lighting Problems
- Complaints
- 4about this part
- Share
- 18%of 22 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the exterior lighting of the 2021 KTM 790 Adventure R, 18% of the 22 complaints for this model year.
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.
“Good day to whoever is reading! I've recently discovered that my brake light does not turn on on my bike no matter what brake i use front or rear. Only way it works if i push brake really hard, like way beyond regular or emergency braking. I've found similar issues online and people pointing on faulty brake sensors. They are located under the gas tank. It requires good amount of skill and time to replace them. But i did and my brake lights returned, but during a test ride i'm loosing my rear brake COMPLETELY. I take everything apart again and find out that rear brake sensor is leaking. …”
NHTSA complaint #11613634, filed 2024-09“Brake light no longer activates upon applying normal pressure to front brake lever. Brake light activation requires greater than normal front brake lever pressure/input in order to activate the light. This issue causes a safety concern with traffic when the motorcycle brake light does not activate appropriately when stopping. This issue is consistent/repetitive and is believed to be caused by a faulty brake light switch on the front brake circuit. KTM appears to have updated/superseded part numbers relating to the faulty part in question.”
NHTSA complaint #11612747, filed 2024-09“1) The vehicle TFT display containing important data such as speed etc.. blacks out on occasion. The vehicle itself is still functional but with the display blacked out the operator has no speed information, or information about the vehicle such as fuel levels and ABS control. KTM has been made aware of the issue as it has affected multiple users worldwide. 2) The indicator/blinker control switch does not engage the blinkers when pushing the switch to the left. In right hand drive markets this a particular hazard. Again, the issue is common across the 790/890 Adventure and Duke models.”
NHTSA complaint #11450634, filed 2022-02Exterior lighting: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 13% |
| 2021 | 4 | 18% |
Other parts of the 2021 KTM 790 Adventure R
11 complaintsFuel system
8 complaintsBrakes
5 complaintsOther or unknown
3 complaintsElectrical system
2 complaintsTransmission and drivetrain
2 complaintsTires
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 KTM 790 Adventure R
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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