Ignition Coils Failure Problems of Toyota RAV4

2007 Toyota rav 4. Consumer writes in regards to vehicle water pump failure. The #6 ignition coil was replaced, as it was shorting out and the steering wheel made an unusual noise, when it was turned.

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Car at about 37,000 miles. Only drive to store and drop kids off to school. Car parked for 10 minutes while at store shopping. Came back, started the engine. The engine light, vsc and 4wd lights all lighted up. When to local Toyota dealer, dealer said can't service it at this time need to make appointment. Dealer stated based on the lights, this might be the ignition coil. . It's known to have problem. Estimated cost to fix about $1500. But we need to computerized the codes. .

See all problems of the 2006 Toyota RAV4 🔎.

We were on the road (on a family vacation). The day that we were coming back the check engine light, the vsc light and the slip warning light came on as we were pulling out of the hotel parking lot. On the way to the dealer, I also felt like the car was misfiring. The dealer found "multiple codes p0304, p0305, p0306, p0356, p1578, c1201. #6 coil malfunctioning. Recommend replace #6 coil pack and recheck. Possible that other coil may fail from the result of #6 coil failing. " #6 coil pack was replaced and the Rav4 has been running fine since. The dealer also said that "typically after one coil goes the others follow shortly after", so I will keep an eye open for that. It is strange since ignition coils have a long life expectancy. I checked on-line and there seems to be a high failure rate with coil pack part # 90919-02251, which is the original part that came with the car. I made sure the part was replaced with the latest revision (90919-a2007) of the new part numbers (90919-a2002, 90919-a2004 or 90919-a2007) that Toyota changed to. It is also interesting that most of the failures happen with #6, #4 and #5 coils (in that order). The failures seem to concentrate around the right front corner, which is close to the radiator (hot fluid) exit. Maybe that is why the later revision part # coil packs have a double metallic screen outside the plastic housing, to protect the assembly.

Driving back from gas station all three lights came on in dash -- vsc, check engine & 4wd. Researched and found that gas cap not sealing cold cause problem, removed / retightened gas cap numerous times. Lights won't go off. I had car tested with obd reader attached and codes (po300, po303, po305 & po356 says it's ignition coil f--primary/secondary circuit malfunction. Car only has 43000 miles and checking on the internet, seems to be a lot of Toyota ignition failures between 40000 & 55000 miles.

After check engine light came on I took it to the Toyota dealer for service and I was told it was faulty ignition coil. This all started when I neglected close the gas cap all the way about a week before. At that time I called Toyota and they said to tighten it and the light would go off. It did for awhile but soon started a series of events that ended up with the coil "d" having to be replaced.

2006 Toyota rav 4. Consumer states ignition coil and plug failure the consumer stated while driving, various dashboard lights illuminated and the transmission shimmied and the engine misfired and the vehicle became disabled. An inspection by the dealer revealed a misfire code and that a number two coil and plug had to be replaced. A month and a half later, the consumer experienced the same problem again. It was determined that another ignition coil had failed and the SUV was operating in four cylinder mode. The consumer was informed his model vehicle had a design/engineering problem which was identified and does not occur on subsequent year rav 4 models.

Multiple cylinder misfire causing hesitation and lack of power. This problem can lead to safety issues since the car looses power intermittently. Mechanic says error code indicates all six ignition coils need to be replaced. The plugs are to be changed at 120k miles. . Read more...