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Audi SUVs (Q7 & Q5) and other V6 TDIs Discussions area for Audi Q7 and Q5 TDI (2009+ in Canada & the US) as well as others with the V6 TDI such as the A6, A7 and A8 sedans.

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Old February 18th, 2019, 08:19   #1
rbarrs77
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Default 2014 tdi q7 headlight dip

Hi all just bought a 2014 q7 tdi and i notice the driver side healight is dim and purple toned. i did a few times also get a dash notification for headlight dip.
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Old February 18th, 2019, 09:57   #2
oilhammer
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OBD works, what DTC(s) are in the headlight control?
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Old February 18th, 2019, 12:39   #3
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Originally Posted by oilhammer View Post
OBD works, what DTC(s) are in the headlight control?
sorry not sure what this means?
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Old February 18th, 2019, 13:34   #4
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OBD means On Board Diagnostics

DTC means Diagnostic Trouble Code

So this means you need to use a scan tool to "ask" the car's modules, in this case the headlight range control or whatever it is called, what is troubling it.

That car has a $1600 headlamp, it most certainly can tell the controllers what ails it. Although in many cases, the fix means replacement of the assembly, because they do not sell parts inside of them (and you couldn't get them apart to replace anyway).

To clarify, the headlamp list price is about $1250, and it does not come with a ballast, that part is about $350.
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Old February 18th, 2019, 16:58   #5
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thank you, so tonight it was flickering for a while and now its dead. id take a guess its the ballast. what do you think
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Old February 19th, 2019, 03:15   #6
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I think OBD works, and that is where I would start. But if you want to throw a $350 ballast at it on a guess, you certainly can.
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Old February 19th, 2019, 07:38   #7
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Quote:
Originally Posted by rbarrs77 View Post
Hi all just bought a 2014 q7 tdi and i notice the driver side healight is dim and purple toned. i did a few times also get a dash notification for headlight dip.
Dont know if this helps you, but sounds comparable?
https://www.carlightblog.com/2014/09...about-to-fail/
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