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Old Jan 18th, 2014, 09:28 PM
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R56 DME Failure Question

First time post and new to the Mini 2 forum but grateful that I can ask the "EXPERTS".

I have an 07 Hardtop S with 70K located in Oh.

2011 had the timing chain cold weather mod done.

Four weeks ago at 20 deg F, I started the car in my garage, warmed up for a min then drove three blocks for fuel (premium always). It started but would not go above 1K or it would act like it was misfiring and then stop with a half full yellow check engine light.

Towed it to mini for the High Pressure Fuel Pump recall but once installed it did not fix the issue. Mini then:
* Cleaned the fuel rail and pressure was correct.
* Removed intake to check for carbon - little found.
* Tested Mass Air Flow - checked out.
Assembled intake and the mini started right up and ran fine. I gave the tech permission to drive it home and cold start in the am (20 deg). Started fine and they ran a diagnostic check which came back clean.

Fast forward after two weeks of daily driving with no issues...yep it failed again with the same symptoms. Towed it to a local BMW mechanic who pretty much retraced the steps of the mini mechanic. He now believes that the DME is bad.

Sorry for the novel just to get to this question but I always thought that when a DME went south, it stayed south and did not heal itself. I found Go DME in Texas that will run a diagnostic DME scan for $75 but I question if this should be my next move. BTW, Mini wants $1425 for a new one and emphasized that there is no refund or return.

Any advice would be greatly appreciated.

Thanks,
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Old Jan 22nd, 2014, 10:08 AM
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How much has this cost you so far?

Tab

Quote: Originally Posted by ls12go (original)
First time post and new to the Mini 2 forum but grateful that I can ask the "EXPERTS".

I have an 07 Hardtop S with 70K located in Oh.

2011 had the timing chain cold weather mod done.

Four weeks ago at 20 deg F, I started the car in my garage, warmed up for a min then drove three blocks for fuel (premium always). It started but would not go above 1K or it would act like it was misfiring and then stop with a half full yellow check engine light.

Towed it to mini for the High Pressure Fuel Pump recall but once installed it did not fix the issue. Mini then:
* Cleaned the fuel rail and pressure was correct.
* Removed intake to check for carbon - little found.
* Tested Mass Air Flow - checked out.
Assembled intake and the mini started right up and ran fine. I gave the tech permission to drive it home and cold start in the am (20 deg). Started fine and they ran a diagnostic check which came back clean.

Fast forward after two weeks of daily driving with no issues...yep it failed again with the same symptoms. Towed it to a local BMW mechanic who pretty much retraced the steps of the mini mechanic. He now believes that the DME is bad.

Sorry for the novel just to get to this question but I always thought that when a DME went south, it stayed south and did not heal itself. I found Go DME in Texas that will run a diagnostic DME scan for $75 but I question if this should be my next move. BTW, Mini wants $1425 for a new one and emphasized that there is no refund or return.

Any advice would be greatly appreciated.

Thanks,

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Old Jan 27th, 2014, 01:33 PM
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I think that the DME is pretty solid thing... To go bad, it usually takes water to foul and rust the connections. If it is the DME, Bosch actually has a repair centre in Germany where they can professionally repair DMEs with hardware faults. I don't know about the costs, but it should be cheaper than getting a new one, otherwise it would make no sense to offer the service...

However, you should try to get the error codes stored in the units when the problem happens. Those can be really helpful to troubleshoot...
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Old Feb 6th, 2014, 01:24 AM
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I found GoECU in TX that will test the DME and rebuild it for $500. Unfortunately they said that the processor in mine was bad and could not be fixed. Purchased a new one from Mini ($1513 ouch) and then programed it to the car. Problem has now changed to no starting at all (motor turns over only). Checked and found no spark, fuel pressure or for that matter no signal (trigger) going to the ejectors.
Error codes are now 2BD2 -> Internal driver inside DME, 2B4A & 2B4E Throttle sensor which I was told is the high/low faults and even if it was disconnected the car should start and idle around 1800 RPM.
I called six Mini dealers around the US today and spoke to a tech that suggested swapping out the new with the old DME to see if it at least starts. If it does then the new one needs reprogrammed. If not... I'm going up to the fourth floor ledge..
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Old Feb 6th, 2014, 08:17 PM
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I had a fault DME Unit from day one

The symptons were a metallic clicking noise under throttle which results in complete power loss for 1 second then power came back on


When you start it up does it stall on its own and fail to start up properly

Like this???


If so its a broken thermostat its a common problem I hope my advice helps
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Old Feb 8th, 2014, 01:50 AM
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Yes, it was very similar to your video except after the third time it stopped running, it would never restart unless you waited about an hour to restart. However, the thermostat got my interest because once Mini mysteriously had it running the temperature dropped into single digits one night and when I went out to start the car it started right up (no hesitation or cutting out) and after one minute, I shut it off and noticed the cooling fan would run for 10 min. The following day I noticed that the heat would drop down to cold air at a stop light. The coolant level was fine and the next day it warmed up to 30+ outside and I never gave it any more thought.
Today it has been in the shop for seven weeks and unless something is found by next Wed I'm going to flatbed it up to the dealer to where they can at least contact Mini engineering.
Thanks for your reply.

Last edited by ls12go; Feb 9th, 2014 at 07:00 PM.
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Old Feb 9th, 2014, 10:01 PM
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This occurred intermediately on my JCW

It would fine one day and not the next
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Old Feb 26th, 2014, 09:37 PM
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Well after nine weeks and $3,200 later, a DME wire was discovered shorted to the intake. It appears that after seven years of vibration the shielding around the wiring harness and the wire's jacket wore thin and shorted to ground. Glad to finally have it back and running. Classic Mini in Cleveland were great to work with and I would highly recommend.
The End...
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