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Model specific boards => Golf mk7 => Topic started by: p3asa on 18 March 2015, 23:35
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I was driving home last night from work on a dual carriageway doing 50 in 5th gear driving gently and I got the error on my MFD that my ACC and Front Assist were not available. What looked like a coil light and symbol for the ACC were also displayed as in the picture below.
The car lost all power and I crawled up the slight hill. I could barely rev over 2500rpm
When I stopped at a roundabout I got another message stating my Stop Start wasn't working.
I thought it was just a gremlin so drove home switched the car off and forgot about it. A few hours later I used the car again and it was back to normal but interestingly the power and responsiveness of the car had been the best it had ever been since owning it!!
This time I gave it a workout for a mile or so with no problems then when I was back to cruising at 60ish the car again had the same symptoms as above with no pwer. I came off the dual carriageway, switched the car off and back on and it was fine for the rest of my 20 mile journey there and back even giving it a workout.
Went out this morning to drive to work and with just the ignition on I got the same warning lights as above and then had no power when i started it up. No switching off and back on helped. It was a nightmare to drive.
When I went to come home from work tonight it was still exactly the same. The car is fitted with a tuning box and unfortunately I didn't have time to remove it but on my way home from work I simply changed to a different map and when I turned the ignition on the warning lights were away and it drove fine all the way home.
Anyone know what the coil and acc lights lit up together mean?
I'm curious as to why when initially I got the problem and just restarted the car a few hours later it felt a lot more powerful and responsive than it ever had. I don't think it was a figment of my imagination.
(http://i918.photobucket.com/albums/ad28/p3asa1/display%201_zpshu6wp5rk.jpg)
(http://i918.photobucket.com/albums/ad28/p3asa1/display%202_zpstu5kymqq.jpg)
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I don't have the GTD but from my previous cars, isn't a coil a glow plug warning?
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I don't have the GTD but from my previous cars, isn't a coil a glow plug warning?
Yes it is. It's also used for something else (related), but I can't be bothered to dig out the manual.
I'd take your box down a notch if you have it on a +2 or +3 setting, maybe remove it altogether for a few weeks as you're approaching needing a service.
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The box was on 1:1 then 2:1. Both settings put the car into limp mode. 3:1 so far seems to be ok. I'm just about to go to work so will see how it is on that setting.
I've attached all the errors from VCDS and it appears Fuel Rail/System Pressure is too Low. I thought it would have been too high with a box attached?
Address 01: Engine Labels: 04L-907-309-V1.clb
Control Module Part Number: 04L 906 021 EP HW: 04L 907 309 A
2 Faults Found:
5211 - Fuel Rail/System Pressure
P0087 00 [096] - Too Low
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 14520 km
Date: 2015.03.17
Time: 16:27:27
5242 - Fuel Pressure Sensor (G247)
P0191 00 [096] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 14569 km
Date: 2015.03.17
Time: 22:13:46
Readiness: 0 0 0 0 0
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Address 08: Auto HVAC Labels: 5G0-907-044.clb
Control Module Part Number: 5G0 907 044 AA HW: 5G0 907 044 AA
2 Faults Found:
1048834 - Functional Limitation due to Energy Management
B10CD 00 [008] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 7
Fault Frequency: 75
Reset counter: 103
Mileage: 8350 km
Date: 2014.10.22
Time: 20:48:33
1048835 - Functionality limited due to Engine Control Module
P1719 00 [008] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 254
Reset counter: 104
Mileage: 6613 km
Date: 2014.09.21
Time: 07:04:05
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Address 13: Auto Dist. Reg Labels: 5Q0-907-572.clb
Control Module Part Number: 5Q0 907 572 B HW: 5Q0 907 572 B
1 Fault Found:
1043 - Automatic Distance Control
B10E7 F0 [008] - Disconnected
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 4
Reset counter: 103
Mileage: 14520 km
Date: 2015.03.17
Time: 16:27:27
--------------------------------------------------------------------------------
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Address 5F: Information Electr. Labels: None
Control Module Part Number: 5G0 035 020 C HW: 5G0 035 020
2 Faults Found:
2571 - Navigation system
B126C F2 [008] - Navigation database not enabled
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 104
Mileage: 10740 km
Date: 2014.12.07
Time: 18:25:54
6720 - Rear View Camera
B1102 31 [008] - No Signal
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 3
Fault Frequency: 14
Reset counter: 104
Mileage: 1078 km
Date: 2014.06.11
Time: 15:28:43
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Definitely a tuning box gremlin as this has happened to mine too. Exact symptoms, exact warning lights.
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P3asa: Might not be that the system pressure is too low, but that the car thinks it is too low when you're under a low load situation - some implausibility reading thrown up when the modified signal is reading less than an established normal baseline?
I was always on 3+1 with mine and my dad's had no issues with it since. He's probably done twice as many miles with it on his in 4 months than I did in the previous 7 months.
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P3asa: Might not be that the system pressure is too low, but that the car thinks it is too low when you're under a low load situation - some implausibility reading thrown up when the modified signal is reading less than an established normal baseline?
I was always on 3+1 with mine and my dad's had no issues with it since. He's probably done twice as many miles with it on his in 4 months than I did in the previous 7 months.
A bug in the software of the tuning box, get the tuners to fix it then????
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Not sure why the ADC and other non engine bits would be chucking faults out related to a tuning box that intercepts and modifies fuel rail and boost signals, but stranger things have happened. Try the car without the box and see if the issues replicate themselves?
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Take the box off and get a proper remap ;)
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Had exactly the same fault as OP last week but in a completely standard GTD with no tuning box or modifications.
Cruising on the motorway at 70 then a big judder followed by flashing glow plug light, ACC error, start/stop error messages and a complete lack of any power. Limped to the services and turning off seemed to reset the problem until the same thing happened about 20 miles later.
Took it into Warrington VW who told me a flashing glow plug light means it's gone into "limp home" mode and this causes the errors on the other systems.
Diagnostic machine reported low fuel pressure fault although after 2 days investigation a VW Master Technician didn't find anything other than a possible loose connection on a sensor.
Whatever they did seems to have solved the problem as it hasn't happened again but I would say this is too much of a coincidence to blame the tuning box on your car.
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Thanks for the replies.
Drove the car to and from work and varied the revs to pretty much the same scenario that has made it limp twice on the other maps and it was absolutely fine.
I'll run it on this map for a few days then take it off and see how I get on.
I was apprehensive about going past anyone on the way home as there is nothing worse if that is when it goes into limp mode.
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Yikes, what a pain mate. I've been using 3+1 so far, I was going to switch to 2+1 for a week but might not bother now!
What setting were you using when you had the issue KyleB?
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Yikes, what a pain mate. I've been using 3+1 so far, I was going to switch to 2+1 for a week but might not bother now!
What setting were you using when you had the issue KyleB?
I've got the older box and it was on 4+1
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Maybe as per Tonydon41 it is a loose sensor or connection, but if it's related to the rail or boost sensors, plugging and unplugging for the box might make it more likely to happen if you have a box?
4+1 on the old box or 3+1 on the new one were my preferred settings.
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Woke up this morning and upon putting the ignition on I was greeted with the same warning lights on 3+1 that I'd been using the last couple of days :cry:
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Woke up this morning and upon putting the ignition on I was greeted with the same warning lights on 3+1 that I'd been using the last couple of days :cry:
Get the box off, clear the faults with VCDS (if you have access to it) and see if it happens without for a week or 2. Stock will feel like you're driving through porridge for at least a week until you accept what you've got and forget the extras of the box.
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Woke up this morning and upon putting the ignition on I was greeted with the same warning lights on 3+1 that I'd been using the last couple of days :cry:
Get the box off, clear the faults with VCDS (if you have access to it) and see if it happens without for a week or 2. Stock will feel like you're driving through porridge for at least a week until you accept what you've got and forget the extras of the box.
Yeah that's what I'm about to do. Can individual faults be removed as I want to keep the one with the rear camera to show them?
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Woke up this morning and upon putting the ignition on I was greeted with the same warning lights on 3+1 that I'd been using the last couple of days :cry:
Get the box off, clear the faults with VCDS (if you have access to it) and see if it happens without for a week or 2. Stock will feel like you're driving through porridge for at least a week until you accept what you've got and forget the extras of the box.
Yeah that's what I'm about to do. Can individual faults be removed as I want to keep the one with the rear camera to show them?
Not sure whether you can clear individual faults or just sweep the log - Sootchucker would know, i'm sure.
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Yes you can clear individual faults.
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Yes you can clear individual faults.
Do you know how Chris?
Anything I've looked at looks like its going to clear the whole lot.
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VW Master Technician didn't find anything other than a possible loose connection on a sensor.
I can believe this. A loose connection can pass an "improbable value" to the ECU which to protect the engine will go into limp mode. I've not had this on the Golf but a couple of times on previous cars, most notably my Jag S-Type-R which dropped to tick-over only in the middle of a junction at rush hour. Like a Windows Laptop... turning it off and back on again cured the issue and it never happened again in my ownership :smiley:
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Yes you can clear individual faults.
Do you know how Chris?
Anything I've looked at looks like its going to clear the whole lot.
Make a note of the different controllers that are throwing up errors. Actually as I'm writing this I've realised what you might mean ie multiple faults within the same controller? If so then you can't clear individual ones within the same controller only different controllers. My fault sorry.
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No you were right, I'm sure the faults are on different controllers.
But when I go to click "Clear faults" I get the impression it wipes all faults which I'm reluctant to do.
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If they are on different controllers then when you clear the faults it only does it on the individual controller. If you do an autoscan and clear the codes it clears all of them.
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Cheers Chris. I'll give it a go tomorrow when I'm off.
Now been running the car for the last couple of days with no box and no error messages :smiley:
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Open each control module and there is fault code button for each one. Which then opens another dialog which can clear that modules fault code.
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Cheers.
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I decided to leave all my error codes on the car and took it in for a service.
When I got it back they said there were no errors on the fuel system.
I thought they were at it and showed them my errors from VCDS.
They then brought the paperwork out and showed me the errors they had.
They had all my errors apart from the Fuel Rail / System pressure - to low and Fuel Pressure Sensor - Implausible Signal
I was asked if it was the ODIS system I was using and when I told them no it was VCDS / Vag Com, they said they hadn't heard of it.
Is it possible VCDS would pick up errors that their official software wouldn't?
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It does make you chuckle when they come out with 'they haven't heard of it' :grin: :grin:
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Yeah I know, although I suppose they aren't enthusiasts and have no need to go searching for alternative methods to access the brains of the car so it is possible :undecided:
I just thought they were at it saying the fuel system was all right. Seems a bit strange VCDS can pick up on errors that the VW official ODIS system can't.
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Whats the reset cycle on those codes?
Never met a vw tech who doesn't know what vagcom is. I know one of my local dealers even use it for on the road diagnostics..
But if your talking to the service assistances I can believe it.
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They have to review all of the diagnostic logs and submit them to VW Germany before any warranty claim can be made...
Whether or not they choose to decide that some of the errors are spurious or transient is something we can't know..