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About corripeter

  • Rank
  • Birthday 11/07/1960

Profile Information

  • Gender
  • Location
    Milton Keynes
  • Interests
  • Occupation
    Electronic Engineer


  • Garage
    2011 BMW 520D F11

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2,560 profile views
  1. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    Hi Saqib, This is the kind of cable needed:....1m long is fine for Dash Centre relocation https://www.ebay.co.uk/itm/GPS-antenna-Extension-cable-Fakra-C-female-to-Fakra-C-jack-RG174-1M/302371478670?hash=item4666be9c8e:g:UdsAAOSwax5YrlUS Regarding the actual antenna assembly use the usual online sites to track down your original UK spec part number, I had I-Drive Professional SA609, so i used that to track down a matching antenna. Peter.
  2. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    Hi Saqib, My system is still working just fine since the last post..in June 2017 ..I have even updated my maps with no issues afterwards The Genuine BMW Sharkfin Antenna assembly mounted under the front centre speaker grill, with a replacement short FAKRA cable proves to me the issue was with the original roof mounted GPS unit all along. In my case it became intermittent before total failure. The exercise of removing the painted cover to unscrew it is simply not worth the risk of paint damage, if you are prepared to do what I did........it is just as good for me travelling in the UK. Get a genuine BMW replacement Antenna assy from an eBay Car Breaker, a cheapo Blue Fakra cable and try it....mine cost only £30 for the pair....so a cheap fix for me. Good Luck, Peter.
  3. corripeter

    Headlight flap?

    My 2011 car has the Full Monty Xenons with L/R Steering............and under those 2 flaps there are the removable access ports for lamp replacements. I know the rear access port is for the D1S Xenon Dipped Beams, but this upper one allows access for the H7 Halogens used for the steering inner lamps / Main Beams. So basically the flaps only needed when you have the higher Spec Headlamp option. Peter.
  4. Hi...........Regarding your tyres for sale, can you please confirm the brand, your location & your asking price? Thanks, Peter
  5. My 2011 F11 520D SE (N47 engine) is now up to 174K with no timing chain issues, ......my previous 2008 E61 520D (also an N47 engine) got to 200K before I sold it with no Timing Chain issues. I religiously change the Oil every 10K and fit anew Oil filter every 20K.....both cars were 4 years old and had 130K on them when I bought them. So in my opinion, if you take the wise "preventative maintenance" approach................There's no need to stress over having a N47 lump under your bonnet. NB: I don't even have to get under the car, as I use a Sealey Vacuum Extractor to suck the oil out through the dipstick...........This way you get most of it out and whats left get regularly diluted with fresh new oil. I use GM Dexos 2 5W30 Oil @ £20 for 5 litres..............and Mahle Oil Filters, which usually cost ~ £9 each..............Simples....... PS: My First BMW Diesel was an E46 320D which I took up to 385K Miles before I moved it on ...only due to wheelarch rust bubbles... Peter.
  6. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    The SAtNav system will use Vehicle speed and Steering angle signals as back up info when the GPS data is missing....this method is referred to as "dead reckoning"....So yes it is kind of correct that the ABS wheel speed sensors are used to generate the vehicle speed and trajectory info, however really this just to cover times when GPS Signals are not being received such as inside long tunnels. Peter.
  7. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    Finally Fixed: Okay.....My next Installment, to help anyone else who trips over this thread in the future trying to fix their similar issue. I tracked down a genuine BMW F11 Antenna assembly from eBay, and along with a short Blue FAKRA female/female lead (ebay again) installed the antenna assembly under the dash-top centre speaker grill, which it fits into perfectly. Hooked the cable into replace the stock Roof top antenna coax cable, and started up the Headunit NAV Screen......Sadly still Stuck in France, even after 15 minutes stationary & waiting no position movement.......So I Re-installed the headunit and then took it for a short test drive, and after ~ 1Km she jumped into the English Channel momentarily...then back to jolly old Blighty....Milton Keynes in fact....Perfect because that's where I was. Since then no issue seen, everything seems to be working just fine............ So the Moral of the Story is/are: 1) The Nav system may need you to actually move some distance before it will correct a displayed position error & 2) A decent genuine BMW antenna still works for the under dash location, looking up through the windscreen & speaker grill I thought about progressing on to the next stage of installing the good working antenna Assembly back into the stock rooftop location, but the risks of paintwork damage removing the bonded on cover are simply not worth the hassle. If your Audio system does not use the Dashtop Centre Speaker location, then it seems to be just as good a location for a GPS antenna as the roof. Peter.
  8. corripeter

    New alloy wheels Bmw F11

    Ryan, The Rear Offset is exactly the same as mine, at 44mm. So other than brake caliper & disk clearance which should also be fine , they will fit your car.. Peter.
  9. corripeter

    New alloy wheels Bmw F11

    Just dug the details out.....& here's what I have fitted: Front Wheels: 8Jx18 ET30 (p/n BMW 36117842650) Rear Wheels: 9Jx18 ET44 (p/n BMW 36117842651) Peter.
  10. corripeter

    New alloy wheels Bmw F11

    Yes Ryan, on my F11 520D there's no fitment issues with the rear 9J Rims, I cant recall the actual offset on my double spoke 18" 350M rims, but they look just fine on the car, if anything they're tucked inside so quite discrete. Since your Rear brake disks are slightly larger diameter, that's the only aspect which might need checking. I went from 245 to 275 wide rear tyres and found I lost a few MPG along the way... Peter
  11. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    Update, The car was just playing with me, and the original CIC Pro NAV problem returned one month later. Since then I have re-made the Blue Head unit connection and also the blue GPS Antenna FAKRA connector but sadly to no avail........ the NAV function has been "off picking daises" ever since then. In the meantime I am using Google Maps on my Smart-phone when I need route guidance, which to be honest is a pretty good alternative. But....Now that the good weather is here I am planning to remove the shark fin cover and swap out the multiple Fin antenna assembly for another one sourced from a F11. Reading up on the task, managing to remove the bonded down Fin plastic cover without scratching the roof paintwork.....looks to be a barrel laughs, but since my BMW GPS map now says I'm in Northern France I'd better fix it before Brexit kicks in..... This post is really just a "prod" to see if anyone else has suffered the same CIC Professional NAV fate as me...........Deep down I still suspect the problem is in the Head Unit itself, but the engineer in me says "you can fix it with parts swapping". Peter.
  12. corripeter

    New alloy wheels Bmw F11

    Hi Ryanbuck, I have a 520D F11 SE with the staggered 9J wide MSport F10 rear rims fitted (275/40/18 tyres), there are no spacers req'd and all offset clearance is just fine. Not sure if the rear disks on your 535D would create a problem which I don't see .. Peter.
  13. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    A further update: So I opted to try an aftermarket active GPS antenna from eBay..certainly worth trying as they are pretty cheap, however no difference seen even after leaving it powered on for 20 mins or so. So I reconnected the OEM GPS antenna and reconciled myself to having to track down someone who can repair it. After 3 more days of no GPS, whilst I was driving into work it magically started to work again, and has been working fine ever since........ So all I know is that I have an intermittent SAT-NAV system. I've used if for route guidance a few times to see if I can induce any SW related failures......however all is still working as it should. I am inclined to believe its a faulty solder joint on the PCB section related to GPS signal Processor....not perfect but possibly repairable when it next kicks in..........Which innevitably will be tomorrow after I have posted this update this evening....... Dooooohhh. Peter
  14. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    Hi Kingwear, Yes there is a blue antenna connector for the GPS antenna, although the F series version is slightly different to the E series one which you show in your image. I know for sure that as far back as the CCC iDrives the GPS receiever module is included within the Head Unit , it is often referred to as the HIP Module (Host Independant positioning). It is whether anyone on the forum has any knowledge of who can test/repair these circuiry sections that I'm trying to ascertain. Regards, Peter.
  15. corripeter

    iDrive, PRO-NAV, GPS Decoding no longer working

    The GPS antenna is in the shark fin....but the circuitry which interprets the GPS data is inside the CIC Pro-NAV head unit..........It's this which needs repairing... Peter