Question about 2002 Volkswagen Passat

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LED display in center of dashboard fades when interior of car is hot

When I leave car parked in sun and interior gets hot, the led panel fades and is barely visible. When car cools off, it returns to normal.

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  • jmurphy887 Aug 10, 2008

    Dash led lights fade when parked in the sun. No known solution.

  • rlpassat Aug 12, 2008

    I have the same problem with the top line of the LED fading when the interior gets hot. Mine has actually led to some weird issues where the emergency break alarm will continue to go off and the AC will not run until the car has cooled off inside. I have already had the wiring harness replaced with no luck. I am now having more electrical issues with the radioCD fuse blowing multiple times and the turn signal clicker continuing to go off after the turn signal has stoped. A new LED is the only suggestion by my VW dealership for $550.



  • ninageneva May 25, 2009

    I have the same problem with the dash lights fading when the temp outside is hot usually above 77 or so. I have a 2002 passat with approx. 85,000 miles.

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  • 151 Answers

Buy a sun deflector for inside ur car, maybe it'll help.

Posted on Sep 03, 2008

  • Jean Leblanc Sep 08, 2008

    I noticed my solution worked. Gad to be of service.

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1 Answer

Which fuse is for the instrument panel back lighting?


Does the radio play ? Are any other back lighting components not lighting ? Does the HVAC control panel light up ? You probably need new radio !
The second interior lighting group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination, LED illumination and incandescent lamps.
When the ignition switch is turned to the RUN position, the radio VF display turns ON at maximum brightness. When the park lamps are ON, all incandescent and LED back lighting turn ON at the dimming level indicated by the instrument panel (I/P) dimmer switch. At the same time all VF displays dim to match the indicated dimming level. The panel dimmer switch potentiometer is an input to the body control module (BCM). When the driver selects a dimming setting by moving the I/P dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the I/P dimmer switch is moved from MIN to MAX, all VF displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch.

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