What does the yellow triangle exclamation mark on the Sienna dashboard mean?

3 Answers
CamillaLee
07/29/25 5:25pm
The yellow triangle exclamation mark on the Sienna dashboard is a warning to turn off the drive control system. If this light comes on and stays on when the drive system is activated, it indicates a problem with the TCS. Generally, when the TCS is active, this light will flash. If it stays on continuously, it means there is an issue with the TCS, which can usually be resolved by turning off the engine and restarting it. The Sienna has dimensions of 5085 mm in length, 1984 mm in width, and 1796 mm in height, with a wheelbase of 3030 mm. The vehicle is equipped with two engines: a 2.7-liter naturally aspirated engine and a 3.5-liter naturally aspirated engine.
Was this review help?
2
5
Share
McReed
08/14/25 8:18am
When I first got my Sienna, the yellow triangle warning light also gave me a scare. It's actually a general warning light, alerting you that the system has detected a minor issue. The most common cause is a door not being closed properly, including the trunk—just give each door a push to check. Sometimes, it lights up when the key fob battery is running low, so try replacing the battery. Low windshield washer fluid or slightly abnormal tire pressure can also trigger this light, though it's not as serious as the red triangle warning. I panicked at first, but later learned that as long as no other warning lights are on, you can safely stop the car, restart it, and see if the light goes away. If it keeps coming back, just read the trouble code to pinpoint the issue. You can still drive with this light on, but don't ignore it for too long.
Was this review help?
5
2
Share
Expand All
VonElliot
10/13/25 6:50am
Last week when I was driving the Sienna to drop off my kids at school, that yellow triangle warning light popped up too, looking like an angry emoji on the dashboard. Toyota designed this specifically to alert owners, usually indicating some minor issue with the vehicle. For example, you might have forgotten to close the fuel cap – try tightening it; or maintenance might be due, with the car reminding you; even low windshield washer fluid could trigger it. Being someone who acts quickly, I immediately found a safe spot to pull over and checked the manual for error codes. The manual said not to panic, explaining this light is like the car's memo pad, reminding you of small tasks that need attention. Turned out it was just an unsecured rear seatbelt buckle in the end.
Was this review help?
7
2
Share
Expand All
More Forum Discussions

How to Unlock the Door of Buick Excelle?

Buick Excelle door unlocking method: Simply insert the ignition key into the keyhole on the driver's side door handle and turn it approximately 90 degrees to the left. Below are relevant introductions: 1. The Buick Excelle is built on the latest global platform developed by GM's European R&D Center. Its front suspension adopts the currently most popular independent suspension, while the rear suspension features a compound torsion beam suspension equipped with a Watt's linkage, marking the first application of Watt's linkage design in China. 2. The Buick Excelle boasts a forward-looking and dynamic five-door coupe design, incorporating fashionable sports car elements and dynamic lines. It features Buick's signature wraparound cockpit design concept, with a driver-centric sporty interior style. The two-tone instrument panel delivers exceptionally strong sports passion.
17
4
Share

What are the reasons for severe shaking when a motorcycle runs fast?

Motorcycle running fast with severe shaking is caused by: insufficient tire pressure, tire bulging, excessively thick inner tube patches, deformed or out-of-round rims, damaged wheel bearings, or issues with the front shock absorber. Solutions include: 1. Check whether the radial and axial swing and runout of the rim are excessive, and whether there is any brake drag affecting performance; 2. Inspect whether the front and rear tires are twisted, deformed, or bulging, and whether the tire pressure is insufficient; 3. Examine whether the front wheel bearings are damaged and whether the front axle is properly tightened. A motorcycle is a two- or three-wheeled vehicle driven by a gasoline engine, steered by handlebars for front-wheel direction, known for its lightweight, agility, and speed, widely used for patrol, passenger and cargo transportation, and also as sports equipment.
4
1
Share

What causes steering wheel malfunction in Audi after wading through water?

Audi steering wheel malfunction after wading through water can be attributed to the following reasons: Generator failure: Water ingress into the generator can lead to steering wheel malfunction, causing loosening of the power steering system connections and resulting in partial leakage of steering fluid. Power steering pump failure: Damage to the power steering pump due to water ingress can also cause steering wheel malfunction. The presence of air in the steering system leads to abnormal steering. Another possibility is the slipping of the hydraulic power steering pump's drive belt when it comes into contact with water. Steering gear piston cylinder damage: Mechanical damage to the steering gear piston cylinder from water ingress reduces the sealing performance of the oil seal and damages the control valve. Foreign objects in the steering hydraulic pipeline can cause the steering pump's flow control valve to stick.
17
5
Share

What to do if you haven't driven for years after getting your license and have forgotten how?

You can quickly get back into driving with some practice. Here are some supplementary materials for getting back into practice: 1. Familiarize yourself with the car's configuration: Get to know the various devices in the car, such as light usage, rearview mirror adjustment, brake usage, etc. 2. Refresh your knowledge of traffic rules: If you haven't driven for a long time, you may have become unfamiliar with current traffic rules, so it's necessary to re-familiarize yourself with them. 3. Seek guidance from an experienced driver: Anyone who has obtained a driver's license will have a basic impression of driving operations. If you haven't driven for a long time and have concerns or worries, you can ask an experienced driver to sit in the passenger seat and give you some pointers. You'll be back in the driver's seat in no time.
20
0
Share

How to turn off the rear wiper of Volkswagen Polo?

There is a knob on the rear wiper of the Volkswagen Polo that controls the rear wiper. Twist the head of the control button and gently lift it upwards. Here are some related precautions: 1. To extend the service life of the wiper, it is best to avoid prolonged exposure to the sun. 2. A good wiper must have the characteristics of heat resistance, cold resistance, acid and alkali resistance, corrosion resistance, close fit with the windshield, reduce the burden on the motor, low noise, strong water repellency, soft texture and not scratch the windshield. Therefore, it is necessary to choose a high-quality wiper. 3. Regularly clean the rubber blade of the wiper to avoid too much dirt residue that may corrode the wiper.
11
4
Share

Where is the sensor for the left middle air vent of the Audi A6 located?

Audi A6's left middle air vent sensor is located under the hood. Definition of the sensor: It detects engine speed, hence also known as the speed sensor; it detects the top dead center position of the piston, thus also referred to as the top dead center sensor, including detecting the top dead center signals for each cylinder used for ignition control and the first cylinder top dead center signal for sequential fuel injection control. Working principle of the sensor: The function of the crankshaft position sensor is to determine the position of the crankshaft, i.e., the angle of the crankshaft and the engine speed. It usually works in conjunction with the camshaft position sensor to determine the basic ignition timing.
5
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.