Weird Problem

[Russdx]

When driving along some times the ABS light will just light up and the traction control light will flash and i will have to restart the engine to clear them

does it randomly though my driving can be just after 30seconds or half way through a 4hour drive, onces its on it stays on till engine restart

took it to a garage to read the error codes on the obd2 port but they said their was NONE and they tried two tools

any ideas because some thing must be wrong or the car would not be flashing these lights, but if it is not storing the error codes how do i know what is wrong ??

or do i need lexus to read it can they read some thing off a obd port normal garage cant ?

[Monster-Mat]

id just take it to lexus...when the lights are on.....

[MacRS200]

Symptoms are of a bad ABS sensor, probably the wire.

Had any work done that could have done any damage?

[Russdx]

no but these is300 coilovers so **** firm the suspension does get smashed to HECK so wouldnt be surprised if some thing is loose

BUT traction control is fine surley that uses the same sensors ???

if their is no error codes what can lexus do ??

Edited November 25, 2007 by Monster-Mat
swearing

[Monster-Mat]

there will be error codes if its being indicated on the dash...

[Russdx]

thats what i thought

yet this garage checked it with 2 OBD2 tools and said there was nothing

i thought OBD2 was a standard so cant see wot lexus can get out of it a normal garages tool can

give em a go i guess, see wot they charge to read it LOL

[Einstein]

not sure if the codes are memorised, but it should show up when the lights are flashing...

If the lights flash, try to read the codes without turning off the ignition... maybe this means you have to drive round with the code reader inserted in the diagnostic socket, but it will show the codes as they appear.

Turning off the ignition will clear any codes that are not memorised.

John

[Russdx]

not sure if the codes are memorised, but it should show up when the lights are flashing...

If the lights flash, try to read the codes without turning off the ignition... maybe this means you have to drive round with the code reader inserted in the diagnostic socket, but it will show the codes as they appear.

Turning off the ignition will clear any codes that are not memorised.

John

ah i thought all codes were stored in some sort of error code stack that dint get cleared it just built up

had a little field test today and found out when the abs light is on and the traction flashing it means I HAVE NO ABS as went to a carpark and slamed my brakes on and it SKIDDED to a stop no juddering abs at all

so i turn car off and on, clearing lights try again and abs cuts in no problem

so cant be that big a problem if just switching engine off and on mends it must be software fault ??

ill get a obd2 reader my self n drive around with a laptop i guess till it errors and get the code my self THEN take it to lexus as dont want to pay them 2hours labor to drive it around to wait for it to come on lol

[boddamloon]

have you checked brake fluid level?

[Russdx]

have you checked brake fluid level?

nope

worth a shot i guess hehe

weird for the car to kill off its abs due to low brake fluid tho ??

[boddamloon]

mine was doing almost the same but my lights was flashing all th time and never cleared and i noticed the fluid was low so i topped it up and its been fine ever since.

[Russdx]

fluid fine

reset ecu will see wot this does hehe

[Rob]

had a little field test today and found out when the abs light is on and the traction flashing it means I HAVE NO ABS as went to a carpark and slamed my brakes on and it SKIDDED to a stop no juddering abs at all

what speed were u doing when u did this? as ABS only works when above certain speed

[Russdx]

hit about 60

iv had it cut in at about 30ish before i think, dont think the min speed is to high

[Rob]

AH then ur well within the abs "band" its at speeds of below about 10 mph from what i remember...

[Einstein]

Most likely will be a poor connection or cable to one (or more) of the wheel sensors..

John

[Russdx]

i guess cant see how just a simple restart would mend that through surley it still be broke after a restart

[Einstein]

Not necessarily.... while driving, the cables are moving about, and as soon as a break in the circuit happens, the light will instantly come on... and will stay on, until the ignition is turned off..

The code is then cleared, and remains so until the circuit breaks again...

This is the problem with intermittent connections.. they are very hard to find, as they usually show up fine when testing..

John

[Monster-Mat]

codes are not cleared by turning the ignition off

[Einstein]

Is that ALL codes, because on my last car, some codes are not memorised, so are lost when turning the ignition off.

[Russdx]

ah im with u

codes either been cleared or its just not making one because the car deffo nos some thing is wrong (my abs been turned off lol)

guess ill just take lexus :(