There are 2 switches on your brake pedal, one for the brake lights, and one for the cruise cancel. If that switch is bad or out of adjustment, the cruise control will never engage and no trouble codes will be set.

Hi, Are the 2 switches on the brake pedal easy to find? Where are they exactly? If "out of adjustment," how do I adjust it so it works? Thanks.

 

It is a difficult one to call exactly. Do you think there would be any recall on the original dealer?? The part has been replaced and has not solved it - they have misdiagnosed it - just a thought.

Maybe the best way would be to go for a fixed diagnostic fee by a good mobile tech - that way for a fixed fee, you should know the issue and not fire the parts canon. I know it is more money, but may be it will limit expenditure.

 

I would agree with you on the multiple fuses.

I would look at power and ground if you are handy with the DVOM, but I would certainly agree withe the above - the spiral/clock wires do wear out. If you are not in to the DVOM checks (which is totally understandable), I would maybe get a local tech to check for you

 

I would agree with you on the multiple fuses.

Thanks for your reply.

I would look at power and ground if you are handy with the DVOM, but I would certainly agree withe the above - the spiral/clock wires do wear out. If you are not in to the DVOM checks (which is totally understandable), I would maybe get a local tech to check for you

I am already out more than $275 at this point. It bought this Rav4 from a Nissan dealer. This dealer advised that the cruise control switch needs to be replaced. I went ahead and bought a genuine Toyota switch and had it installed locally. The new cruise control switch has not resolved the issue. The spiral/clock replacement, from the looks of it, appears to be a bigger expense than replacing the switch. Am I correct?

What is the cost-effective way to diagnose the issue?

 

most common cause on older vehicles is worn spiral cable. cruise control signals are simple, short the wire with different resistor values, that's how computer knows on/off, set, res, cancel...just different ohms across the short.

this yaris thread has tons of info since base yarises had cruise installed, but no switch, so people macgyvered it up and you can see what is involved thru that thread to help you know what you might be able to troubleshoot on yer rig

DIY Cruise Control FAQ (2006-2010 Yaris) - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site

DIY Cruise Control FAQ (2006-2010 Yaris) DIY / Maintenance / Service

www.yarisworld.com

also google search for cruise control spiral cable and you'll see what spiral cable is all about

 

Hope this helps - there are loads of fuses associated with the circuit

 

Thank you! This is complicated!

Is there a fuse here that impacts cruise control only?

I ask this since nothing else is wrong with this vehicle. If all fuses impacting cruise, affect multiple functions, is it reasonable to say the cruise issue is not fuse related?

 

Here are the fuse box diagrams for the 2008 Rav4. I can't find the word cruise on these 3 pictures. What am I missing?

 

Articles such as this one state a blown fuse is a common reason for cruise control not working.

Can someone help in locating this fuse on a 2008 Rav4 (Base, 2.4L, 2wd, automatic)?

 

There are 2 switches on your brake pedal, one for the brake lights, and one for the cruise cancel. If that switch is bad or out of adjustment, the cruise control will never engage and no trouble codes will be set.

 

Thanks for the suggestion. I read somewhere on the internet that I can check for a faulty brake pedal by pulling the brake pedal towards the steering with my feet while driving. I tried it and it did not fix the cruise control issue.

 

Start simple. Are the brake lights stuck ON? If they are on, cruise will not engage.

Also check your gear position. Cruise will only engage in the top-most two or three gears, depending on which transmission you have.

 

Thanks for the suggestions.

Start simple. Are the brake lights stuck ON? If they are on, cruise will not engage.

The brake lights are NOT stuck on ON.

Also check your gear position. Cruise will only engage in the top-most two or three gears, depending on which transmission you have.

I am trying to engage cruise control with the automatic transmission in 3-O (overdrive) at speeds above 50 mph.

 

I understand. Probably best to find a trusted mechanic who can help you out

 

The C1201 code is a multi point fuel injection code. If the ECU detects this is will disable the VSC and TRAC (which would disable your cruise I think) - that is the root cause.

As you have a Cat code too, that could be. caused by the fuelling issue. You will need to rule out any harness or connector problems associated with the injectors - look for damage or green crusties from the injectors back to the ECU and repair as necessary.

Are you able to use the OBD2 reader to post the data associated with the front and rear O2 sensors - we need to look at the action of the rear(s) O2 in particularly. When the engine is warm, does the voltage of the rears remain stable or oscillate? It should be stable of the Cat is good

I believe you need to address those 2 points first, then clear the codes and see where we are

 

Are you able to use the OBD2 reader to post the data associated with the front and rear O2 sensors - we need to look at the action of the rear(s) O2 in particularly. When the engine is warm, does the voltage of the rears remain stable or oscillate? It should be stable of the Cat is good

Unfortunately, I do not have the reader or technical knowledge to get this this of reading.

 

No other dashboard lights are on.

Some time ago, the check engine, VSC, and slip indicator lights turned on. The OBD 2 reader showed the following diagnostic codes:
P0420 - Catalyst system efficiency low.
C1201 - Engine control system (ECM) Malfunction - ECM is not able to work with the Electronic Stability Control System and Anti-lock Braking System.

The dashboard lights have gone away after replacing the catalytic converter.

I do not think it is a burnt bulb (giving the green CRUISE display). None of the cruise control functions work.

 

I don't get if the cruise control is actually working or not. Maybe the bulb is burned? Does it illuminate when the key is put on "contact" position (not running)?
Check the ABS fault light too - is different from the normal Check Engine light.

techstream would show the exact reason why, a cheap OBDII reader won't show ABS codes.

 

Any error with one of the wheel speed sensors will disable Cruise, 4WD, etc but also sets error lights. That's why I asked.
If so they'd need to be cleared but a standard OBD2 reader can't reset them.

 

Are you able to pull any codes (actual or pending) with an OBD2 reader - there may be a clue in those codes somewhere

 

Are there any dash error lights?