Question about Ford Expedition

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2007 Ford Expedition: The traction control light was continuing to flash on dry road conditions. The dealership replaced the module for the traction control and the vehicle seemed fine. After about 4 weeks, the traction control starting kicking in on at 40 mph on dry road conditions. Dealership seemed to think I was driving too fast. Then it kicked in at 30 mph. The dealership has no idea what problem could be as no codes are shown on computer and of course vehicle seems fine when they drive it. Could the problems be related to having tires replaced shortly prior to first problems.

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  • k_helvey May 12, 2010

    Thanks for your help. I'll pass on to dealer.

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  • Master
  • 1,297 Answers

Yes....yes.... and....yes

in addition to tire size you could also be dealing with wheel speed sensor issues

are the tires a different size than original?

Posted on May 12, 2010

  • 2 more comments 
  • k_helvey May 12, 2010

    Tires are the same size as original but different brand. I asked dealership when problem once arose if it could be the tires and answer was no. First time the traction control kicked in, the grinding noise caught me by surprise and I stopped at a local garage to speak to the owner to ask if could be brakes. His wife owned a similar expedition and advised me to take it back to the dealer since still under warranty but suggested that the dealer check the sensors in the steering column as well as those on the wheels as he had to replace sensors on his wife's vehicle due to traction control.

  • Sean Reisdorf
    Sean Reisdorf May 12, 2010

    since the tires are the same size as OEM then we can rule that out

    has the dealer ever duplicated the problem?



  • k_helvey May 12, 2010

    No, one of the employees in the service department took my vehicle home last night. Said he drove it for about 20 miles and could not get the traction control to kick in. They said until they hear and see how happens, they can't determine cause. Next option will be for me to take more time off work to actually drive the vehicle with one of them as a passenger. So I'm assuming they still think it's my driving. I've had this vehicle for 2 1/2 years and this is first time I've had a problem with it. So if my driving habits, it should have been a problem before now.

  • Sean Reisdorf
    Sean Reisdorf May 12, 2010

    you and they are correct... need to see it to diagnose

    so... find a dealer that is open late or on the weekend and YOU drive it since you know exactly how to get it to act up


    I really suspect, the the noises and stuff that you have a wheel speed sensor issue!!!

    and yes, an intermittent wheel speed sensor will NOT set a code



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What does a red circle with a red triangle an ! Inside triangle mean on a 2004 audi


Electronic Stabilization Program (ESP)

The light will flash if you are driving and the traction control system is activated (it detects wheel slip on ice, water, etc.). This just tells you it is actively working. You should adjust your driving to the current road conditions to prevent loss of control.

If it stays on continuously, the traction control system (ESP) is off, or there is a problem with the ESP system. Usually, the ABS light will also illuminate if the ESP light is on due to a fault.

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Why does my 4 wheel drive not work all the time?


Elaine,

not work, do tell what makes you think it dont work (a lamp) or tires slipping or dead tires. (by tires mean that and traction)??????????

what mode fails, of the many, and where.???????



first off, we dont know what your tires are touching.

on road, or off road. pavement or ICE or snow.

that matters big time . (you read manual and match MODE to Road)

your lost operators guide explains all that, right?

eg: how and when to use, 4wd, its all there. I promise.

ControlTrac 4-wheel-drive system



here are the mode. which one , gives you problems.



quote ford with comments.



What are the modes, and how do they differ?

(note this is the operational behavior of a 2008 Ford Expedition. Newer and older Expeditions will vary only slightly)



2H 2-wheel-drive with high range gearing (1.00:1) Rear-wheel-drive capability,

2-wheel electronic traction control system is enabled



4A 4-wheel-drive Auto with high range gearing (1.00:1) Full-time all-wheel-drive capability, ((best on pavement or any time)

Electronically adjusted torque split to front & rear wheels, Electronically variable center differential,

Front driveshaft & rear primary driveshaft allowed rotational speed difference,

4-wheel electronic traction control system is enabled



4H 4-wheel-drive with high range gearing (1.00:1) Part-time 4-wheel-drive capability, (not for dry pavement EVER)

Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,

Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,

4-wheel electronic traction control system is enabled



4L 4-wheel-drive with low range gearing (2.64:1) Part-time 4-wheel-drive capability, (off road usage, mostly)

Continuous 50/50 torque split to front & rear wheels, Electronically locked center differential,

Front driveshaft & rear primary driveshaft mechanically locked with no rotational speed difference,

4-wheel electronic traction control system is enabled, ESC and RSC are disabled



In 4A mode the center differential is electronically-controlled and rear drive wheel bias. The on-board computer monitors for any sign of rear drive wheel slip (loss of traction)

If loss of traction is detected, the center differential is told to send a share of the engine\'s torque to the front drive wheels. It will not let the front driveshaft turn at the same speed as the rear driveshaft.



What about traction management?

1997-2002 model Ford Expeditions offered an optional limited-slip rear differential (LSD). A conventional open rear differential was standard along with the conventional open front differential and the electronic locking center differential.

comment with out LSD, one tire can spin, on say ice.

but the other 3 tires dont, in full time.

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1 Answer

Esp driving


location not stated, or road conditions. nor if in 4low , nor if the ESP switch is off or on. Ask Suzuki for help (lol) or any ASE shop.

it's not magic, it can not give traction , if none.
on ice slow down. (esp can do that too. slow you,brake you and even
shift gears in the transmission)

are you in 4wd? or high 4Low, esp is inactive. (or limited)
read the operators guide. (if lost, get one now)
read the page on driving on ice.
chapters 5,6,7.
have you had any off these conditions , related to ESP, this a
is the ESP light acting wrong, or CEL check engine light running?
are all dash lamps (warning) showing correctly per the opr. guide?
ESP & ABS are vary complex, (not magic)


quote from the servise manual. (car battery dead or disconnected?)
ESP control module
When ESP control module is removed / installed, do
not use impact wrenches which generate shock or
impact to avoid damaging sensors in ESP control
module.
Note that Calibrate word here..!
When any of the following operation is done, calibrate
steering angle sensor, G sensor and master cylinder
pressure sensor (in ESP control module) referring to
"Sensor Calibration in Section 4F
- When battery or dome fuse is removed. (
a low battery or weak)
- When steering angle sensor is replaced.
- When ESP control module is removed.
- When yaw rate / G sensor assembly is removed.



read this, it covers this system well,

http://www.wkjeeps.com/wk_esp.htm

read page 7-2 here (the do not drive words)
http://www.autodealertools.com/quickQuote/manuals/2007/Grand%20Vitara.pdf

this car has no center differential. (read limits there of)
are you using chains on the tires?
oper guide page 4-6 , read that yet?

If the vehicle speed is greater thanapproximately 30 km/h (19 mph), the ESP systems (other than ABS) will turn
on automatically and the light will go out.
When the transfer switch (if equipped) is
turned to the "4L LOCK" position, the

ESP systems (other than ABS) will be canceled automatically. The light will come on and stay on.
• If the ESP systems operate continu-ously such as when driving on slippery roads, the traction control functions of the ESP systems may be canceled temporarily to avoid overheating the brake pads, and the light will come on. After a short period of time, the ESP.

(this latter cut out happens, with wild driving)

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Modules can cost hundreds of dollars, or the wheel hub assemblies replaced to rectify a basd wheel speed sensor can also cost in the hundreds of dollars, unfortunately.

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