2021 Toyota Sienna Lane departure Problems
- Complaints
- 2about this part
- Share
- 1%of 165 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the lane departure of the 2021 Toyota Sienna, 1% of the 165 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.
“1. The vehicle displayed the Rear Cross Traffic Alert (RCTA) warning light along with the Blind Spot Monitoring (BSM) warning light on the dash board. The vehicle was brought to Toyota of Ann Arbor for an inspection. After inspecting the vehicle, Toyota of Ann Arbor reported that road debris (snow, dirt, mud, etc.) was trapped between the bumper and the sensor resulting in the sensor to malfunction. The vehicle has been taken through a car wash with an underbody wash option, but due to the position of the sensor, the sensor is not able to be cleaned from a car wash. …”
NHTSA complaint #11559118, filed 2023-12“Van has just over 5k miles. Multiple warnings occurred while at speed on a highway. Primary warning was 'Low Brake Power' and braking became extremely touchy as it seemed to utilize the emergency brake as a backup. This extreme braking is hazardous and could result in an accident caused by braking too quickly - with a possible rear-end collision by traffic to the rear. Additional warnings/malfunctions were listed as well, due to the low brake power: LTA Malfunction (Lane keep assist), Automatic Emergency Brake Malfunction, Parking Brake Malfunction, Check Engine. …”
NHTSA complaint #11423107, filed 2021-07Lane departure: other model years
Other parts of the 2021 Toyota Sienna
80 complaintsOther or unknown
29 complaintsSeats
17 complaintsAir bags
16 complaintsElectrical system
13 complaintsVehicle speed control
10 complaintsEngine
8 complaintsSeat belts
8 complaintsTransmission and drivetrain
8 complaintsBody and structure
6 complaintsVisibility (wipers, defrost, mirrors)
6 complaintsForward collision avoidance
5 complaints
← All problems reported for the 2021 Toyota Sienna
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