SOmething ODD happened to my 02QX4!

A forum for the legendary Nissan Pathfinder and Infiniti QX4.
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QX4MIkey
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It has happend before, but I didn't think it was anything serious.

What happened was that while using Cruise Control the "SET" light started to blink and CC is not working..I tried pushing Cancel and UP/DOWN but nothing...The light kept on blinking!

So I pull over and turned the ignition off and the key out. Put it back in and somehow it reset the blinking light and CC is now operational again.

This morning, it happened again and this time I drove straight to the dealership and showed them the blinking light. They concluded that this was due to a faulty CC pump and will be fixed under warranty.

Anybody else experience this problem?

Mikey


NISTECH
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um um ummmmmm I thought the new engine was throttle by wire (throttle motor operated by ecm) which would mean the ecm controls the cruise speeds, meaning there is no cruise actuator(pump). the 3.5 in the pathfinder is set up that way I would think the more complex QX4 would have this control as well. In the older model vehicles when the light flashed that was infact what it meant. but on throttle by wire all the under hood cruise components have been eliminated.

QX4ME
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02 QX4 is not throttle-by-wire, but traditional throttle-by-cable. I adjusted my 02 QX4 cable one time to take some slack away. I don't know about Pathfinder but I doubt it.

NISTECH
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wow that seems strange to me that th infiniti product would have traditional but the nissan has modern throttle set up. only thing I can think of is the radar unit QX4 has was the reason for it not having TBW.Pathfinder or any of nissans line currently does not have the radar set up.

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QX4MIkey
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well they fixed it around thank giving time....Friday actually, NOW, its doing it again!

If it does this the 3rd time, can i call it a lemon?

Mike

NISTECH
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I was wrong about the pathy being throttle by wire in 02 it became TBW in 03. actually I believe the law says 2 times now. but this is a minor deal. if it were an engine or trans thing I would persue the lemon law buy back. But this system is a minor system in the car and IMO doesnt seem like a good reason to have it bought back unless you are just not happy with the vehicle overall. the Pathfinder and QX4 are probobly in the top 3 in quality of all of nissans fleet. If you go out and buy another vehicle you will probably experiance some little problem like this with it to. What was wrong with it the first time they fixed it?

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QX4MIkey
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NISTECH wrote:I was wrong about the pathy being throttle by wire in 02 it became TBW in 03. actually I believe the law says 2 times now. but this is a minor deal. if it were an engine or trans thing I would persue the lemon law buy back. But this system is a minor system in the car and IMO doesnt seem like a good reason to have it bought back unless you are just not happy with the vehicle overall. the Pathfinder and QX4 are probobly in the top 3 in quality of all of nissans fleet. If you go out and buy another vehicle you will probably experiance some little problem like this with it to. What was wrong with it the first time they fixed it?


it was the same thing..the car would run sluggish then the CC will disengage...then the CC light will start to blink and the CC will not work anymore until the key is removed from the ignition and re-started.

Kinda annoying and most of all, a little dangerous as it all of a sudden slow down for no aparent reason.

NISTECH
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sounds like they got something more going on with the circuit that is damaging the pump or the circuit is loosing contact for a split second but stays in lock out till the key is cycled. I suspect its a connection problem and not a component failure. they should be looking for codes with consult. are they?

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QX4MIkey
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NISTECH wrote:sounds like they got something more going on with the circuit that is damaging the pump or the circuit is loosing contact for a split second but stays in lock out till the key is cycled. I suspect its a connection problem and not a component failure. they should be looking for codes with consult. are they?


I dont know what they are going to do with the car. I still need to contact them about this...Ive been busy I still need to make an appointment.

Thanks

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QX4MIkey
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Well-

I got the the car back a while ago and the Tech's weren't able to replicate the problem and told me that the CC is working fine and even mentioned that i need to be driving over 45MPH to get the CC to work..(DUH...thats not the Issue).

In Anycase, It happened again Yesterday and I drove it directly to the dealer so they can SEE that I was not making this thing up. Now I will need to drop it off again this afternoon for FURTHER diagnostic testing.

I hope this gets resolved fairly soon as it is getting quite annoying if you ask me.

Mikey

QX4ME
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Well the 00 QX4 manual says CC works at 30 MPH and above, and the 02 QX4 at 25 MPH and above. "...driving over 45MPH to get the CC to work..." said by the that tech is nonsense.

NISTECH
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I agree with QX4ME I have always ben to understand it was 30 mph. not just for nissan but any car manufacturer. but was unaware it was lowered in 02. regardless I cant imagine why they told you 45 mph.

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QX4MIkey
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on another note... I got the car back from the dealer with the same response..

"WE DON'T KNOW WHAT IS CAUSING IT"..they even called Infiniti Tech , but they are stomped as well..

Im just worried that one day the CC will engage and will NOT shut off due to this a d Ill really be screwed!!

Mike

NISTECH
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that wont happen. the system defaults to off. put your mind at ease about that. do you have the radar cruise in yours? when it is snowing or there is heavy moisture in the air it will shut down. Thats the design of it since the moisture in the air could confuse the radar unit. If its not raining maybe that sensor is sending an erronious signal to the ASCD[auto speed control device].

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QX4MIkey
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NISTECH wrote:that wont happen. the system defaults to off. put your mind at ease about that. do you have the radar cruise in yours? when it is snowing or there is heavy moisture in the air it will shut down. Thats the design of it since the moisture in the air could confuse the radar unit. If its not raining maybe that sensor is sending an erronious signal to the ASCD[auto speed control device].


i dont know what kind of cc mine came with...i know its just the normal cc and nothin fancy.

mike

NISTECH
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the radar unit is mounted in front of the radiator behind the grille,bubble looking thing.


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