Fix it
- Note every light and whether it flashes
Check engine, TRAC OFF or AUTO LSD, VSC OFF, 4WD. On a 2006–2012 RAV4, a flashing 4WD light means something different from a steady one.
- Flashing 4WD light: slow down or stop
The 2010 RAV4 manual says the driveline temperature is too high. Reduce speed, or stop and let the engine idle until the light goes off.
- Get the stored code read
On a 2006–2010 RAV4, P043E, P043F, P2401 or P2419 matches Toyota bulletin TSB-0046-10, 'MIL ON; fuel in EVAP system.'
- After rain or deep water, mention it
Of 14 owner complaints that name the charcoal canister or its filter hose, 9 came after rain, deep water or a puddle. Tell whoever diagnoses the car.
- TRAC OFF on its own on a 2014 or 2017: see a dealer
Both manuals say TRAC can't operate when TRAC OFF shows without the switch being pressed (AUTO LSD too, on 2WD), and to contact your Toyota dealer.
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A RAV4 with the check engine light and TRAC OFF on often has a third light lit with them: 4WD. In owner complaints to NHTSA, that picture belongs mostly to the 2006–2012 generation. NHTSA holds 9,501 complaints for the RAV4 family (RAV4, Hybrid, Prime and EV). Narrow that to complaints mentioning the check engine light and 443 remain; 86 of those also mention TRAC, VSC, traction control or the 4WD/AWD light. Sixty-three of the 86 are 2006–2012 models.
The 2010 RAV4 owner’s manual explains what each of those lights means on its own. It doesn’t explain why they come on together, and neither does any Toyota document we found. Owners’ reports fill in part of the gap, and on this generation one part keeps coming up: the charcoal canister in the EVAP system.
The complaint counts are owners’ own accounts, unverified by NHTSA, and they are not failure rates. This page is RAV4-only; the cross-model picture is on our Toyota-wide TRAC OFF page.
Three lights on a 2006–2012 RAV4
Here’s what the 63 complaints from those years show when read one at a time:
| What the complaint says (2006–2012) | Complaints |
|---|---|
| Mentions the 4WD or AWD light (or the LSD light) | 43 of 63 |
| Names the charcoal canister or its filter hose as the diagnosed cause | 14 of 63 |
| Of those 14, the lights came on after rain, deep water or a puddle | 9 of 14 |
| Names an oxygen or air-fuel sensor | 6 of 63 |
The canister reports are specific. A 2007 2WD owner reports: “FOUND THE EVAP SYSTEM CHARCOAL CANISTER FILTER HOSE BROKEN OFF AT THE FILTER ASSEMBLY. WATER HAD FILLED UP THE CHARCOAL CANISTER AS WELL AS GRAVEL AND SAND.” (ODI 10234899). A 2010 owner’s dealer “DIAGNOSED MY PROBLEM AS WATER IN THE CHARCOAL CANISTER” (ODI 10824918). In these 14, the diagnosis came from a dealer or mechanic, or the part was found hanging off the car.
The sensor complaints are ODI 11191478, 11163618, 11064498, 10717678, 11398486 and 10322460. Owners who reported repair quotes for this generation give figures of about $900 (ODI 10839120), about $1,200 (ODI 10358604), about $1,294 (ODI 10238832) and $1,550 (ODI 11058280). Treat them as single data points from owners, not prices to expect.
If your lights came on after heavy rain or a drive through standing water, say so to whoever diagnoses the car. Nine of the 14 canister cases started that way.
What Toyota’s bulletins say about the EVAP system
Two Toyota bulletins on NHTSA’s file deal with the EVAP system on these years. Only their NHTSA summaries are on file, not the full documents.
TSB-0046-10 (January 28, 2010) covers 2006–2010 RAV4s: “MIL ON; fuel in EVAP system. Some vehicles may exhibit … MIL ON with the following DTCs stored: P043E, P043F, P2401 … and P2419; intermittent rough idle when at operating temperature.” If your code is one of those four, bring the bulletin number.
TSB-0028-11 (April 7, 2011) covers the 2010 RAV4: NHTSA’s summary says the charcoal canister “is updated to fix a malfunction light that is on with a stored trouble code.”
Neither summary mentions TRAC OFF, VSC or the 4WD light. We searched the text of 160 Toyota bulletins for the RAV4, Corolla and Tacoma whose summaries name the check engine light or a trouble code, and none of them mentions TRAC OFF, VSC or the slip indicator. We couldn’t search 19 of them, which exist only as scanned images. The step from a wet canister to three lights on the dash rests on owners’ reports, not on Toyota.
What the 4WD light means on its own
On this generation the 2010 manual calls the AWD hardware the “active torque control 4WD” system, and its warning light has two behaviors that call for different responses:
- On steady: “Indicates a malfunction in the active torque control 4WD system” (page 420).
- Flashing: “the driveline temperature is too high.” The manual says to “Reduce vehicle speed … or stop the vehicle … and allow the engine to idle until the light goes off” (page 421).
“Dynamic Torque Control” is the name the 2014 and 2017 manuals use for the later AWD system. It isn’t what a 2006–2012 RAV4’s manual calls its own.
Toyota’s manuals don’t explain why an engine fault would bring the 4WD or stability lights on. One 2011 owner describes the link from experience: “THE ENGINE LIGHT WILL CAUSE THE VEHICLE TO AUTOMATICALLY SHUT OFF THE 4WD AND STABILITY CONTROL” (ODI 11191478). That’s an owner’s observation of their own car, and the same owner traces the light to an oxygen sensor.
TRAC OFF, AUTO LSD and VSC OFF on 2006–2012 models
A 2WD RAV4 of this generation has no TRAC OFF light at all, according to the 2010 manual. A quick press of the switch lights AUTO LSD and VSC OFF instead (page 182). On a 4WD, the same quick press lights TRAC OFF (page 183). The manual’s other switch action is a push and hold “while the vehicle is stopped,” with no number of seconds given.
| What’s lit | Model | What the 2010 manual says |
|---|---|---|
| AUTO LSD + VSC OFF after a quick press | 2WD | Driver pressed the switch (p.182) |
| TRAC OFF after a quick press | 4WD | Driver pressed the switch (p.183) |
| 4WD warning light, steady | 4WD | Malfunction in the active torque control 4WD system (p.420) |
| 4WD warning light, flashing | 4WD | Driveline too hot: slow down, or stop and idle (p.421) |
Where the switch sits is shown in a drawing in the manual, not described. Lights that stay lit are covered on the TRAC OFF light that won’t turn off, and the VSC side on the TRAC OFF and VSC light guide.
Later RAV4s: the 2014 and 2017 manuals
From the 2014 manual on, the AWD system is “Dynamic Torque Control AWD,” with its own warning light (2014 manual, page 85). Both manuals spell out what TRAC OFF means when you didn’t press the switch, and the 2WD and AWD versions differ.
On a 2014 2WD, the warning is a TRAC OFF light that “flashes even if the VSC OFF switch has not been pressed,” and then “TRAC and AUTO LSD cannot be operated. Contact your Toyota dealer.” On a 2014 AWD, the wording is that TRAC OFF “comes on” without the switch being pressed, and “TRAC cannot be operated. Contact your Toyota dealer.” (page 274).
The 2017 manual (page 310) widens the list. On 2WD models, “TRAC, AUTO LSD and hill-start assist control cannot be operated. Contact your Toyota dealer.” On AWD models the warning is a message on the multi-information display, and “TRAC and hill-start assist control cannot be operated. Contact your Toyota dealer.”
Complaints thin out after 2012. The RAV4 family from 2013 on has only 9 that pair these lights, 5 from 2013–2018 and 4 from 2019 on, which is too few to show a pattern. That count covers the hybrid models too, and we haven’t read the hybrid sections of the manuals, so this page doesn’t describe how a RAV4 Hybrid’s traction system behaves.
Earlier RAV4s, 2001–2005
Another 14 of the 86 complaints come from 2001–2005, and 12 of those are 2004 models. They don’t point one way: 4 describe hesitation or shifting trouble, and 2 describe overheating or coolant problems. The RAV4 check engine light page covers Toyota’s records for these years in detail.
A blinking check engine light is a different warning
A flashing 4WD light and a blinking check engine light are two separate warnings. In California’s OBD II rule, the check engine light blinks once per second while a misfire bad enough to damage the catalytic converter is going on. Cars that cut fuel during such a misfire are exempt and may hold the light steady, so the rule isn’t a promise about every car. The blinking-light page goes through what to do.
Clearing it
Toyota’s clearing instructions here come from a single manual, the 2023 Camry’s. If the fuel cap was loose, “tighten it securely. The light will go off after several driving trips. If the light does not go off even after several trips, contact your Toyota dealer as soon as possible.” (page 533). The same manual notes that the loose-cap code “will not be cleared unless the vehicle is driven 40 or more times” (page 454). Clearing the code once the cause is fixed is covered in our reset guide.