You can get your gauge needles and scales to be lit even when headlights are off with Carista. All you need to do is plug in your OBD adapter, open the Carista app on Android or iOS, click “CUSTOMIZE”, then go to “Instruments / Display / Dings” and set both of the following settings to YES:

Gauge needles lit even when headlights are off

Gauge scales lit even when headlights are off

After you have done this, both the needle and scales will be lit regardless of your headlights, as long as it is daytime (or the sensors of your car detect enough light to consider it daytime). However, once the car decides it is time for headlights, it will turn off the scales lighting in order to remind you to turn on your headlights and there is no way to change this behavior. Hence you should try the customization at bright daylight.

This works on Audi A4, S4, RS4, A5, S5, RS5 (all B8 platform); A6, S6, RS6, A7, S7, RS7 (all C7 platform); A8, S8 (all D4 platform) and Q5 models.

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To see if your car is supported, go to https://caristaapp.com/vehicles

The Carista App is available for Android and iOS

The Carista OBD2 Adapter is available from Amazon UK/FR/DE/IT/JP. Direct from our website ECSTuning (US) AutoInstruct(Aus) Carista — Japan or Ebay(US)