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Thread: Front Bumper Project Gone Wrong

  1. #1
    Join Date
    Apr 2021
    Location
    Australia
    Posts
    16
    Users Country Flag

    Unhappy Front Bumper Project Gone Wrong

    Hey all,

    I handed in my 2015 Volkswagen Sportswagen TDI SEL (White - LC9A) to a local auto-body shop for a personal project. I decided that I wanted to have the MK7 GTD Sportswagen style so I committed myself into purchasing a genuine GTI front bumper alongside, GTD grille and other appropriate parts to match the replication of a GTD model which was not offered here in Australia


    Issue 1: [RESOLVED] After my car being at the shop for a week, I came to collect my car and instantly noticed the front bumper hue was mismatched and appeared 'blue' in the white:
    https://imgur.com/gallery/WjWFJiA

    (It was more noticeable in person).

    Issue 2: [UNRESOLVED] On top of this, the front parking sensors were detecting objects in front whereas there was nothing to detect except the road in which it drives on. The sensors in the front don't work correctly but the outside sensors work fine. The interesting part is that the sensors do not detect anything whilst the car is on a light coloured road but when I enter onto the main road (black asphalt) the sensors experience a nervous breakdown. I have cleansed the sensors and there has been no difference. The workshop mechanically heated my old parking sensor brackets into the new bumper and they made a statement, "The old parking sensor brackets do not correspond with the new bumper so we'll need to order in the correct parking sensor brackets". This made me upset as this was a 'guess' and added to the cost of the bumper cost...

    The auto-body shop firstly repainted the front bumper again to the correct match (the auto-body shop utilised my side mirror caps to colour match - big mistake prior as the side mirror caps were manufactured in another country as opposed to the body of the car! They don't properly match the bumper whether plastic or metal). The parking sensors still display the same results as before although the paint match is immaculate.

    Front Bumper Project Gone Wrong-img_4331-jpgFront Bumper Project Gone Wrong-img_4336-jpgFront Bumper Project Gone Wrong-img_4334-jpg

    Speculation: Is the sensor not flush with the bar? Is the sensor angled too far down? Was the wiring harness damaged during removal and installation? Are sensors allowed to be resprayed, if so, is the resprayed sensors interfering with the proximity? Is the bumper causing the issue? (Manager deterred to this issue although I doubt this as it's interchangeable and no one else has experienced this issue before). Have the brackets been welded incorrectly to the bumper?


    I am looking forward to anyone who has answers, cheers!
    Last edited by Righteousness; 24-11-2021 at 07:59 PM. Reason: Text issue

  2. #2
    Join Date
    Apr 2021
    Location
    Australia
    Posts
    16
    Users Country Flag Thread Starter
    Anybody got anything? Feel free to ask your mate if you’ve got not idea, lol.

  3. #3
    Join Date
    Sep 2013
    Location
    Victoria
    Posts
    1,547
    Users Country Flag

    @Righteousness: Hi. wow - you must have liked the look of the GTD a lot!!!

    I'm just guessing (emphasis on "guess"), but since this is a not-common retrofit, I would suggest more information gathering is needed. If this was my car, I would start my data accumulation by hooking-up a diagnostic cable to the vehicle - and looking at what the car's CAN network says about the sensors. The mk7 has a quite sophisticated error handling facility that can be very instructive in chasing these types of "odd behaviors"

    Anyway- the proximity sensor operations are intimately tied to the car's CAN network and the car itself has the ability to provide valuable information towards diagnosing the problem. Seems illogical not to use the facility (no offense intended)!!

    I suspect that you might not own a diagnostic cable -if so, this forum has a "pimping-facility" whereby members can ask for help from others that own such devices - see HERE

    Don
    Golf MkVII 103TSI (Highline) my13
    Polo 6R 77TSI (Comfortline with Comfort Pack) my14

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