20 Most Recent 2008 Jeep Commander - Page 6 Questions & Answers

This could be caused from a number of things.

Brakes shes or rotors
Worn tires uneven read wear
Bad wheel bearings.

You can rule out the brakes by 50% chance of it being this if when your driving it and you stil hear this noise without applying pressure to the break pedal. Although a pad that came off may be stuck on the rotor causing this.

Tires or more like a huming and vibrating.

Bearings are common and sound like a whirling and more pronounced as the speed picks up in the vehicle.

there may be a way but nothing can be done without a ford scan tool,its like a computer with a newer version software and you try to install an older one,its always in the memory, so the nav must of had a program in it already, you may be able to use it if you could find a way to unlock it,

One of your door switches has failed.
Typically - the driver's since it gets the most use.

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The radiator fan(s) must come on immediately when the AC is turned on. Blow out the radiator core from the engine side with compressed air to get rid of bugs and other debris. Make sure the radiator cap seal is in good condition (check when cold). Is the engine hot enough to force coolant out of the radiator? Hope some of this helps!

check wiring under drivers seat to memory seat control module as they may have been pulled out or broken if so need to go to dealership, is your vehicle still in warranty if so repair at dealership is free

passenger side under the truck near bottom of engine firewall.

code --catalyst system efficiency below threshold bank 2 -means that the o2 sensor [bank 2 and after cat converter] is detecting that the converter in not working efficiently as it should as per specs--check the 02 sensor --if good possible exhaust leak if good --possible cat converter gone bad and since it is an 08 cat should be covered under warranty check with a dealer most converters are covered for five years doesnt matter how many miles on vehicle

Removed both battery terminals overnight to allow a reset. I had done that already but not long enough for a reset

Check your cables and terminals

change switch assy...............

check your spark plugs and wires.

try replacing remote batteries, but must have a second programmed key to reset first one in case its gets uncoded, best advise do not take long time to replace battery, if problem persist have a good honest mechanic inspect door key cylinder security switch if it is not disconnected, but before you do this, if right side front door or rear door has cylinder try opening vehicle from this doors, if they unlock vehicle and alarm doesn't go off you might have problems inside driver's door cylinder switch, on this year vehicle must use STAR SCANNER from chrysler jeep dodge to solve problems

brake light switch up under dash follow brake to pedal up will see switch mounted on bracket

If you hear any ticking or knocking inside the engine do not drive it. You could change the oil pressure sending unit if there's no noise, most times that will fix the problem. It is advisable to put an external mechanical pressure gauge on there, either temporary or permanent...then, you can read the actual pressure...
I prefer gauges to lights because most time lights (either temp or oil) tell you "you have just blown your engine", instead of warning you when a problem is just beginning.

Its usually not the nav unit. Best way to find out many dealers have a demo nav disc ask them to pop it in if it works then u know the disc is at fault not the nav unit. The bad news it the disc costs about $300. Hope this helps please rate if it does.

It is not being reset properly.

easiest way to check is to locate the washer pump on the bottom of the tank, disconnect it, and hook a test light between the two terminals! One will be power and the other ground, so when you hit the washer button, if it lights up, you need a new pump! if it doesn't it is most likely in the switch, cause there are going to be other functions you are missing in your vehicle as the fuse is going to control more than just the w/washers!