E91 335d DTC fault

E91 335d DTC fault

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Discussion

Discopotatoes

Original Poster:

4,101 posts

221 months

Thursday 5th May 2016
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My DTC warning light has just illuminated and the button now does nothing, I also have a yellow had brake light at the same time. Any thought where to start looking.
Cheers

rsv gone!

11,288 posts

241 months

Thursday 5th May 2016
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My guess would be a failed wheel-speed sensor or reluctor ring.

Discopotatoes

Original Poster:

4,101 posts

221 months

Monday 9th May 2016
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rsv gone! said:
My guess would be a failed wheel-speed sensor or reluctor ring.
That's what I'm thinking as after trying cruise that doesn't work either

Crackie

6,386 posts

242 months

Monday 9th May 2016
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Can you post up a pic of your dashboard lights ? Alternatively you could have the fault codes read. This thread might be helpful if it is the hydro unit http://www.pistonheads.com/gassing/topic.asp?t=127...

Geffg

1,127 posts

105 months

Monday 9th May 2016
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Sounds like what happened on mine. Think it was the abs pump. Common fault at certain mileage I think around 75k. I believe can get a repair kit as its common. Sorry for the vagueness but mine happened about 4 years ago and had only had car 2 weeks and the garage repaired it. I had no traction control or abs.

Discopotatoes

Original Poster:

4,101 posts

221 months

Tuesday 10th May 2016
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Well I was drinking into work this morning and the lights went out and everything is working again. Weird

craigsup

282 posts

102 months

Tuesday 10th May 2016
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Discopotatoes said:
Well I was drinking into work this morning and the lights went out and everything is working again. Weird
You shouldn't drink and drive mate wink

Discopotatoes

Original Poster:

4,101 posts

221 months

Tuesday 10th May 2016
quotequote all
craigsup said:
Discopotatoes said:
Well I was drinking into work this morning and the lights went out and everything is working again. Weird
You shouldn't drink and drive mate wink
And that was just the start of my problems lol

Prinny

1,669 posts

99 months

Tuesday 10th May 2016
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If the lights have gone out, and then come back, I'd be more & more inclined to believe that it's the hydro unit as suggested above. Mine went at 120k miles, and was on/off for a few weeks. When gone, you've no cruise/traction/abs - it's easy enough to verify if you've a code reader - it's 5DF* (0 or 1) if I recall correctly.

If that's the case, a 4cyl car unit is cheap enough from BMW that you might as well go there for it. However, a 6cyl car is £2500+!

ecutuning (no affiliation - google it as to what they do) repaired mine - they're the best solution in my opinion, to what is a design fault on the car (but one that typically occurs well out of manufacturer warranty).

Do check codes before committing though, it could just be a dodgy reluctor ring, or dirt in the cogs/ sensors!

Crackie

6,386 posts

242 months

Tuesday 10th May 2016
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Prinny said:
If the lights have gone out, and then come back, I'd be more & more inclined to believe that it's the hydro unit as suggested above. Mine went at 120k miles, and was on/off for a few weeks. When gone, you've no cruise/traction/abs - it's easy enough to verify if you've a code reader - it's 5DF* (0 or 1) if I recall correctly.

If that's the case, a 4cyl car unit is cheap enough from BMW that you might as well go there for it. However, a 6cyl car is £2500+!

ecutuning (no affiliation - google it as to what they do) repaired mine - they're the best solution in my opinion, to what is a design fault on the car (but one that typically occurs well out of manufacturer warranty).

Do check codes before committing though, it could just be a dodgy reluctor ring, or dirt in the cogs/ sensors!
+1 yes
The company is called ecutesting rather than ecutuning. Link here http://www.ecutesting.com/

Prinny

1,669 posts

99 months

Tuesday 10th May 2016
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arse. Thanks for the rectification Crackie!

Discopotatoes

Original Poster:

4,101 posts

221 months

Thursday 12th May 2016
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Thanks for the info I'll keep an eye on it

Discopotatoes

Original Poster:

4,101 posts

221 months

Thursday 12th May 2016
quotequote all
Thanks for the info I'll keep an eye on it

anonymous-user

54 months

Thursday 12th May 2016
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Had that failure on wife's z4 at 6 yo, 25k miles. No repair kit available and Autotest not able to guarantee a repair.

Bill of £2300 from BMW, though they contributed £1600 because of low mileage and FBMWSH.

The warning lights came on and went off with increasing frequency over a month or two before staying on.