MOT Question
Author
Discussion

tony wright

Original Poster:

1,042 posts

279 months

Tuesday 9th February 2021
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I have a Kia Optima and it’s not moved for nearly a month. Unfortunately the MOT has now expired, so I thought I’d SORN the car as the likely hood is it won’t be used for some time.When I went to move it, I noticed the Electronic Stability Control (ESC) light has come on, not sure how as it wasn’t on when I parked upconfused but now wondering if it will be an MOT fail? Manual says to take it nearest dealership and google reckons wheel or speed sensors buggered.

Scrump

23,933 posts

187 months

Tuesday 9th February 2021
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It may just be that the battery is getting discharged.

lost in espace

6,586 posts

236 months

Tuesday 9th February 2021
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Might need to get over a certain speed to go out.

Sebring440

3,206 posts

125 months

Tuesday 9th February 2021
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lost in espace said:
Might need to get over a certain speed to go out.
I thought the pubs were closed?

To the OP:

If the car has not been used for a while, it could simply be (as suggested above) low battery voltage. Fully charge the battery, then take the car for a good run. See if that affects the warning light before you try anything else.


anonymous-user

83 months

Tuesday 9th February 2021
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It will be a fail if presented with the light on.

Defect Category

(e) ESC MIL indicates a system malfunction Major

tony wright

Original Poster:

1,042 posts

279 months

Tuesday 9th February 2021
quotequote all
Buggerfrown

I’ll take it for a good drive, as and when things start to return to normal, although it started first time and battery seemed as though it still had plenty of power.

TooLateForAName

4,925 posts

213 months

Tuesday 9th February 2021
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Could also be corrosion in a reluctor ring if it uses the abs system to drive asc.

tony wright

Original Poster:

1,042 posts

279 months

Thursday 11th February 2021
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Bit knackered now as due to the expiry of the MOT taking it for a drive etc is out of the questionfrown I’ve seen a few you tube videos on possible simple causes, along with a few quick fixes, but unfortunately none of them have worked. Battery will come off next, but still turns the engine over with what seems like plenty of power.

Last question, would a small Indy likely sort the issue out? Car is now out of its 7 yr warranty so reluctant to pay dealer prices, but thinking along the lines of their diagnostic equipment possibly not being as sophisticated.

t400ble

1,804 posts

150 months

Thursday 11th February 2021
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Any decent garage should be able to read the fault codes

Mr E

23,040 posts

288 months

Thursday 11th February 2021
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t400ble said:
Any decent garage should be able to read the fault codes
£15 on amazon and a phone and you can read the fault codes.

rolando

2,407 posts

184 months

Thursday 11th February 2021
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I had exactly this after my Merc. had been idle for a month. Cleared itself within a mile. I think had to switch off and start again. Not recurred since.

anonymous-user

83 months

Thursday 11th February 2021
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tony wright said:
Bit knackered now as due to the expiry of the MOT taking it for a drive etc is out of the questionfrown I’ve seen a few you tube videos on possible simple causes, along with a few quick fixes, but unfortunately none of them have worked. Battery will come off next, but still turns the engine over with what seems like plenty of power.

Last question, would a small Indy likely sort the issue out? Car is now out of its 7 yr warranty so reluctant to pay dealer prices, but thinking along the lines of their diagnostic equipment possibly not being as sophisticated.
My old Mercedes SLK's battery ran out of juice a few weeks back (to the extent the central locking wouldn't work and the clock had reset). I jump started it and the ABS/Traction control failure light came on. This is apparently normal when the battery has got so flat. Took it out for a drive for half an hour and the battery was back to health and when I restarted the errors had gone.

tony wright

Original Poster:

1,042 posts

279 months

Thursday 11th February 2021
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I’ll keep my fingers crossed a fully charged battery does it’s thing🤞

Richard-390a0

3,484 posts

120 months

Thursday 11th February 2021
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Have you tried turning the steering wheel from lock to lock yet?.

anonymous-user

83 months

Thursday 11th February 2021
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Have you tried ‘exercising’ the ESC?
The dash on my wife’s car was lit up like a Christmas tree .. Cleared it by wheel spins & emergency stop!

Paul the Painter

95 posts

158 months

Thursday 11th February 2021
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Traction control/Stability control, requires the car to "know" the performance of the car. So many things can trigger the fault light which by themselves would not lead you to think of that system. Low tyre pressures, weak engine power (due perhaps to not being driven for a while, damp plug leads etc.) The one family it is least likely to be in my experience is anything directly to do with the Traction/stability control. I have a hazy memory of an O2 sensor going on my girlfriend IS250 that triggered the EML, but also the Stability/traction control. (I.e. engine operating outside of known parameters, therefore TCS set to inoperative)

Charge battery, start car, get it properly warm, if you can't drive out anywhere, just idle out on driveway for 30 mins. Check tyre pressures. Then turn it off and back on again.

Hope for the best

sim72

4,998 posts

163 months

Thursday 11th February 2021
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My Passat has started doing this regularly, and always at the same place on my commute to work (which is luckily about 300m from my workplace). The lights (ESC, ABS and handbrake, and sometimes power steering as well) illuminates on a sharp left turn on a fairly high-speed cloverleaf junction, almost like it doesn't like the G-forces it's getting. If I drive slower it doesn't happen, but I keep forgetting smile

When I leave work the lights don't illuminate, and everything is fine. It's going for a service tomorrow so I've asked my local indie to have a look at it. I'm going to guess it's a sensor (wheel speed?) sending garbage back or similar (crosses fingers it's not the ABS module).

Tyre Tread

10,678 posts

245 months

Friday 12th February 2021
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Paul the Painter said:
Traction control/Stability control, requires the car to "know" the performance of the car. So many things can trigger the fault light which by themselves would not lead you to think of that system. Low tyre pressures, weak engine power (due perhaps to not being driven for a while, damp plug leads etc.) The one family it is least likely to be in my experience is anything directly to do with the Traction/stability control. I have a hazy memory of an O2 sensor going on my girlfriend IS250 that triggered the EML, but also the Stability/traction control. (I.e. engine operating outside of known parameters, therefore TCS set to inoperative)

Charge battery, start car, get it properly warm, if you can't drive out anywhere, just idle out on driveway for 30 mins. Check tyre pressures. Then turn it off and back on again.

Hope for the best
Re bold bit. Yes this happened on my Lexus IS250 as well. Had me confused at the time as couldn't understand how an O2 sensor could case the TCS light to come on.

helix402

7,913 posts

211 months

Friday 12th February 2021
quotequote all
Mr E said:
£15 on amazon and a phone and you can read the fault codes.
£15 will be engine ecu only. Not other ecus.

james_TW

16,347 posts

226 months

Friday 12th February 2021
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Jimboka said:
Have you tried ‘exercising’ the ESC?
The dash on my wife’s car was lit up like a Christmas tree .. Cleared it by wheel spins & emergency stop!
A few years ago, my Golf did exactly this after being stood - Once warmed up (not even for a drive) and charged, the problem went away...