20 Most Recent 2006 Toyota 4Runner - Page 8 Questions & Answers

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Have you checked the Heater Plugs. or the electrical supply to them? Difficult cold starting can often be caused by Heater Plug failure in most diesel engines

Hello, the check engine light will also cause the other lights to turn on, those will usually go off when the cause for the check engine light is fixed or the check engine light is cleared by disconnecting the battery. The P705 is a transmission fault code, it refers to a problem with the transmission range sensor, this is part of the neutral start switch located on the side of the transmission where the shift selector attaches, it has a large connector with wires on it, these connectors can corrode so remove it can check and clean as needed or if nothing like that can be found replace the neutral start switch.

Sounds like a defective alternator

https://www.mahle-aftermarket.com/media/local-media-north-america/pdfs-&-thumbnails/torque3.pdf Try here

does it have spark from the distributor

Next to the brake pad

From what I see you have no cabin air filter but If it has one it should be behind the glove box. link below. http://filterlocation.com/toyota-4runner-cabin-air-filter-location/

Which sensor in particular?

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The 4x4 indicator light is turned on by the actuator at the front differential when it engages the ADD. This means the problem is not at the front differential. It may be an issue with the transfer case if it's the automatic electronic controlled transfer case.

Take the cover off and see if that label is causing the problem.

The floor shifter engages the transfer case, the front differential the has to lock, if the 4wheel light does not turn on then the problem is at the front differential possibly the vacuum operated front wheel lock diaphragm. Check to make sure the vacuum hoses are attached to the vacuum housing, check the metal pipes on the diaphragm they can clog up with rust, you may have to remove it and apply vacuum to it to see if it works. If the hoses are on at both ends, they connect to a vacuum solenoid at the top, check the solenoid.

Try disconnecting the battery for a minute.

Get a 2nd opinion. Get the cooling system ckd. The cooling sensor will eventually adjust the timing along w the valves. ck your coolant level when warmed. all sensors contribute to valve/ timing.

Transfer box fault? (This is very common fault on Land Rover discovery)

run the fault codes for the timing to be out there will ba code