2001 Toyota Sienna — Known Issues & Recalls

Your horn stops working when it rains or when you drive through water, and it takes about a day for it to dry out before it works again. This can be a safety concern since you won't be able to alert other drivers to potential hazards in wet conditions. The fix will likely involve inspecting and potentially replacing the horn assembly or its electrical connections to make it weather-resistant.

Your passenger-side sliding door warning light stays on, even when the door is fully closed. This warning light stayed on continuously and drained your battery over time. The dealer identified that the sliding door's electronic control unit is faulty and needs to be replaced to fix the problem.

Your rear automatic sliding door won't open or close, and it can't be operated manually from either inside or outside the vehicle. You've noticed other electrical problems developing on your vehicle as well. The repair will likely involve diagnosing the door's electrical motor, switches, and control module to identify and replace the faulty component.

Your dashboard lights and interior lights are flickering on and off. Your driver's seat electric controls are working intermittently instead of reliably, and the radio's backlight and cruise control light on your instrument cluster have stopped working. These issues suggest an electrical connection or power distribution problem that may require diagnosis of your vehicle's electrical system and battery connections.

While turning into a shopping center parking lot, your car suddenly accelerated on its own and didn't respond to normal braking. The emergency brake slowed but didn't stop the vehicle, and a passenger had to turn off the ignition to bring it to a halt. When you restarted the engine, you heard a very loud growling noise from the engine compartment. The dealership tested the car thoroughly but couldn't find any problems or reproduce the issue.

Your horn works intermittently, which creates a safety hazard since you may not be able to warn other drivers or pedestrians of danger. You've already had the spiral cable replaced twice ($400+ each time) without permanent success, and now the horn pad assembly is being replaced. This appears to be a recurring defect that may require multiple repair attempts to fully resolve.

Your van was involved in a crash where the front passenger side bumper hit a wall. Despite the collision being significant enough to cause total damage to the vehicle, the airbags failed to deploy. This is a serious safety concern since airbags are designed to protect occupants during impacts like this one.

Your airbag warning light is flashing. A Toyota dealership charged you $152 to diagnose the problem, then said they need additional hours and charged another $152, without confirming what's actually wrong. You're concerned this may be a Toyota recall issue and worried about your family's safety. The dealer will need to complete a full diagnostic scan of your airbag system to identify the root cause and determine if it's covered under a recall.

Your engine is producing heavy smoke from the exhaust pipe, and you can see oily sludge buildup under the oil cap. This indicates your engine oil is breaking down and not circulating properly. The issue may require an engine flush, oil change, and inspection of internal components to determine if there's underlying damage.

Your engine is burning oil, which causes white smoke from the exhaust when you start the car that may improve while driving. You're losing about a quarter quart of oil per week. A mechanic suspects the head gasket or engine seals may be leaking, which would require a major repair costing $2,000 or more to fix.

Your driver's side rear sliding door repeatedly fails to latch properly. When you force it shut in an emergency, it becomes stuck and won't unlock, trapping anyone inside and requiring the door to be disassembled by a mechanic to open it again. This is a serious safety concern, especially with children in the middle and back rows, and it's happened three times in three years, indicating a defective latch mechanism rather than an occasional glitch. The fix will likely involve replacing the door latch and lock mechanism hardware.

Your van's engine is accelerating on its own without you pressing the gas pedal. After you release the brakes, the engine revs up and the van moves forward at traffic speed on its own, and applying the brakes harder doesn't stop this from happening — you've had to shift into Park to prevent moving into pedestrians or your garage. This happens randomly and no check engine light appears, even after diagnostic scanning. The issue likely involves the throttle control system, which may need inspection or replacement of the throttle body or accelerator pedal sensor.

Your seat belt pretensioner isn't working properly, which is preventing your airbags from deploying in a crash and has triggered the airbag warning light on your dashboard. This is a safety concern because your airbags may not protect you if you're in an accident. The fix will likely involve replacing the faulty pretensioner unit and having the SRS system reset or reprogrammed.

While driving, your accelerator pedal became stuck in the down position, causing the engine to race at high RPM even after you applied the brakes and shifted to neutral. After manually freeing the pedal, you noticed the power steering system stopped working for the rest of your drive home, making it very difficult to turn the steering wheel. The fix may involve inspecting the accelerator cable or linkage for binding, and checking the power steering pump and belt system.

While driving, you heard a snapping sound followed by something dragging underneath your vehicle. Upon inspection, you discovered the fuel tank's rear support straps had broken, causing the back of the tank to drag on the road. This is a serious structural failure that required towing to a mechanic for repair. The fix will involve replacing the broken fuel tank straps or brackets that secure the tank to the vehicle frame.

While driving at about 55 mph, your hood suddenly shook violently and unlatched from the vehicle, which caused your windshield to crack. A mechanic was unable to determine why the hood failed. The hood latch system needs to be inspected and repaired to prevent this from happening again.

The cable that holds your spare tire underneath your van broke where it connects to the metal bracket. You discovered this when trying to remove the spare tire, but the owner notes that if this had failed while driving, the spare could have fallen onto the road and damaged your van or hit another vehicle. The dealership said there's no recall for this issue.

The steel cable that operates your power sliding door on the right side snapped while opening electronically, leaving the door stuck and unable to open more than a foot. This forced passengers, including children, to exit through the driver's side door into traffic, creating a safety hazard. The door became stuck until the loose cable was manually cut away, and now it only works as a manual door. Fixing this will require replacing the entire power sliding door motor and cable system.

Your brake pads are wearing out extremely quickly—you've replaced them three times in the last year, and they're already grinding again just 30 days after installing new pads, rotors, and calipers. This unusually rapid wear suggests there's an underlying problem with your braking system that needs to be diagnosed. A mechanic should inspect why the pads are failing so quickly, as this could be a safety concern.

Your front passenger seat moves back and forth on its own. When you inspected it, you found that the bolt holding the backrest was cracked and had come loose. This needs to be fixed to keep the seat secure and safe.