View Full Version : Please Help Navigation and Spoiler Issue after Flat Battery

04-02-2017, 03:55 PM
Hi Guys,

I hadn't used the car for over a week and found the battery totally dead this morning, to the extent where the glazing on the doors wouldn't drop and I could even lock it up. i'm certain the route cause of the drain of the battery was a setting on my dashcam power settings whilst in parking mode which I have reset hopefully.

Anyway it jumps started instantly with the RAC and their jump start power pack thing which I may invest in for myself that way I won't have to sit in the car if it happens again.

So following this the spoiler has popped up and not go down with the Spoiler system failure warning in the driver display and the navigation map is all over the place and wont pick up my current location (stuck in some part of London)

any help please,

04-02-2017, 04:35 PM
Haven't had battery issues with this car but have had plenty with my previous (X5), and my experience was that (non-essential) electronics used to go all over the place due to low battery.

Horrible messages like 'transmission in fail-safe', 'self level. Susp. Inactive' were all too common.

They all used to reset themselves when the battery came back to normal.

Sent from my iPhone using Tapatalk

04-02-2017, 05:06 PM

yes I had lots of light flashing including tyre pressure sensor warning and the needles on the dials twitching and then dead,

the navigation map issue is still annoying me, I drove to the midlands 117miles after the jump start so the battery should be fine but the spoiler is still up and map stuck, however after selecting a destination the miles of the journey come up in the driver display correctly, is there a reset or anything I can do?

04-02-2017, 06:13 PM
Try the MMI reset?

Sent from my iPhone using Tapatalk

04-02-2017, 07:40 PM
yes, I have reset the MMI and the map came back up the same.

I have changed the starting point location to where I am currently, it was previously Princes Riseborough for some reason I know I didn't put this in, so the map looks good now, and hopefully the map moves with the car if that makes sense,

I will admit I rely on the nav a lot so this is an important one for me, the cars still under warranty so if the spoiler still doesn't sort itself out I will book it in for a check up and mmi update

04-02-2017, 08:15 PM
Sure I read somewhere about disconnecting the battery for 30 mins resets things. You loose radio presets etc but may be worth a shot?

Sent from my iPhone using Tapatalk

05-02-2017, 09:28 PM
Thanks for the tips, Map works fine now, spoiler still up and error showing of system failure, I may book it in as I have warranty and hopefully the battery doesn't drain again as ive changed the dashcam setting.

Also bought a Clarke jumpstarter just incase, being unable to even secure the car was worrying

15-03-2017, 10:34 PM
So the dealer had the car for the day and on collection advised there is a likely a fault in the wiring loom regarding the rear spoiler and the MMI/DAB module. ive been told the wire is long the roof and the headlining will need to be removed! so the spoiler is still up and the NAV is ok for now however my DAB is intermittent.

they also advised my battery had low charge which I was surprised by, I don't use the car daily however that morning I did a 90mile trip to the dealer in Leicester so I thought the alternator would be charging the battery enough? this is also why my dashcam is not doing its48hr parking recording function as it detects the battery is reaching its critical present level. So should I get a trickle charger? and if anyone has used one can you connect a trickle charger to the nodes under the bonnet or would it have to be directly onto the battery?

Will send an update on the works next week, cant say I'm pleased about the headlining having to be removed, I will do my best to inspect the car properly on collection,

16-03-2017, 09:22 AM
I think we spoke about my cam on another thread but I have a Thinkware cam also with parking mode that shuts down on low voltage and/or after 48 hours etc etc but no issues here.
What I have done however is trickle charged the battery once when I got the car. Previous A6 after a similar issue to yours with other cams meant I generally now do a trickle charge over a weekend if I'm not going anywhere which currently is once or twice a month

Assuming you have voltage settings to shut down the cam on, what setting is it on? I think I set mine on 11.8v from memory

In regards to trickle charging points, I use the ones under the bonnet. The negative (slightly lower down) is fine putting the clamp on horizontally but the positive is a pain as it's difficult to keep the clamp on and keep it flat. In the A6 I did hardwire a cable/adaptor to the battery from the boot however I found unless I buy an extension for that cable, it won't reach the plug socket in the carport so I just use the bonnet ones for now and shut the bonnet

16-03-2017, 09:58 PM
i believe mine is set on 12.1, no less and the camera is now off less than 24hrs into parking mode.

I think I will look into the trickle charger, don't know whats happened for the battery/charge to deplete as I had no issues around 6 weeks ago.

is there an easy way I can check the voltage of the battery? and what should a healthy battery voltage be?


17-03-2017, 09:36 AM
Unsure about the model you have but I can check mine over the weekend - However in my C6 A6, I had plugged the car into VCDS/Laptop and there was a battery module that you could go into to check the voltage and what not including battery state which gave you a percentage of the battery charge/health from memory

This might help: Can I use VCDS to check the alternator / battery charging OK ? (http://www.vwaudiforum.co.uk/forum/showthread.php/129385-Can-I-use-VCDS-to-check-the-alternator-battery-charging-OK)

18-03-2017, 05:18 PM
i believe mine is set on 12.1, no less and the camera is now off less than 24hrs into parking mode.

I think I will look into the trickle charger, don't know whats happened for the battery/charge to deplete as I had no issues around 6 weeks ago.

is there an easy way I can check the voltage of the battery? and what should a healthy battery voltage be?

Cheers, Today was less car day apart from putting in the last of the LED lights as I broke one trying to remove it :aargh4: however I did jump into the car to do a quick scan and search for you via VCDS. What I found is the normal measuring blocks icon is blocked out but the advanced one was not and I found my answer there - I think.

So plug the car in, and open up Module 19 - CAN Gateway
Then click on Adv. Meas. Values (under Basic Functions)

This will open up a VCDS Advanced Measuring Values screen and also a "Click for Selection " screen which is essentially a set of bits you can check to monitor.

In there, check the Battery ones that you want to measure. In my case I did the following which got me the following results:

Battery variant - Manufacturer: JCI
Battery variant - Size: 92 Ah
Battery Voltage : 12.206v
Battery Current filtered: -16.200A
Battery Current: -16.289A
Temperature of battery sensor: 15
Battery temperature: 14
Battery charge condition: 81%
Battery condition for display: 80%
Battery internal resistance: 3.2 mOhm
Usable battery charge: 45 Ah

From memory when I used to monitor the A6 C6 battery, it was the battery condition that was useful. I can't remember the in's and out's of it however there are plenty of threads explaining it but from memory, once it got to 60-70% it was probably worth planning on changing it?
Mine is 81% however I was sitting in the car for a good 30 mins with heated seats on, radio on and fans on minimal and so it might change once the trickle charger does it's thing.

Hope this helps! What is interesting is it's a 92 Ah battery, pretty sure my the A6 C6 was 110. Never checked the A6 C7 so can't compare.

02-05-2017, 10:46 PM
Well I recived the car back today from the dealer after 4weeks in their hands, the work carried out:

Spoiler control unit
New spoiler mounting and Bracket

Replaced entire roof aerial

All seems to be working fine now, the costs on the invoice mount upto 1280 excluding the VAT and this would have been more on labour had it have been out of warranty !! unbelievable cost considering these are relatively small issues.

As part of the investigation of the rear spoiler in the notes the detail "lubricated spoiler" I assume this would be to 2 hinges - so does anyone out there lubricate the brackets? I have the spoiler on the auto setting so only really pops up on the motorway

I know I will be following up on the extended warranty now.