How To Repair - faded lighting to Dual Zone Climate Control Panel - Chrysler 300C Forum: 300C & SRT8 Forums
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post #1 of 50 (permalink) Old 11-03-2012, 06:57 PM Thread Starter
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How To Repair - faded lighting to Dual Zone Climate Control Panel

This is my write up - how to repair fading to your dual zone climate control unit back to a nice green glow.

Parts & basic tools needed for job:

(only 5 required) 3mm Blue colour bulb covers (ebay item no. 150491476310)
(only 5 required) 3mm 12v filament 'grain of wheat' mini bulb (ebay item no. 400110358903)
Flat sided (slot screw drive) screwdriver and flat head screwdriver bit
Soldering kit
Glue gun
4mm mini hex socket set
Tweezers
Measuring tape
Household scissors

Please note the ebay item number for both parts has remained unchanged for the last 2 years. If you are unable to find the part numbers on ebay, then you need to search for the items yourself

Here is mine, note how its faded in the areas as shown in the photos.


Another close up



STEP 1 - Remove the centre dashboard fascia
This is the easy bit, NO TOOLS are required to remove the fascia. Watch how I carefully remove the fascia.

First, press to open ashtray. With the ashtray open, feel the notch beneath the centre dashboard fascia with your hands and gentle pull away starting from bottom and working your way round the fascia. The fascia is held in position by several clips.

For extra room, you may want to shift the gear selector to neutral, please ensure foot brake is applied at all times and keys are removed from the ignition barrel before disconnecting the Dual Zone Climate Control Unit.


STEP 2 - How to separate the Dual Zone Climate Control Unit from the fascia

There are 4 mini bolts/hex screws holding the Dual Zone Climate Control Unit to the fascia. They all need to be undone to separate the unit from the fascia. You will need 4mm mini hex socket to undo them at each corner and its easy to do. See photo illustration and video.




STEP 3 - How to dismantle the Dual Zone Climate Control Unit

The Dual Zone Climate Control Unit is separated from the centre dashboard fascia and is now ready to be dismantled.



Pay careful attention!

Turn dials fully to anti clockwise position as illustrated in the photo below. The dials are pattern keyed and must be set fully to the anticlockwise position to extract them from the unit.



Now gently pull to extract each dial from the dual zone climate control unit as illustrated in the photos below. Taking care remove them all one at a time.






Now the dials are all removed, note the pattern key and the reason why it was necessary for the dials to be turn fully to anticlockwise position to extract them.




Now moving onto the next part.

There are 8 notches holding the dual zone climate control unit together. There are 3 notches at the top side, 3 notches at the bottom side, 1 notch each at the left and right side and they all clip together holding the unit in one piece.

Take apart the dual zone climate control unit using a flat head screwdriver or a flat head screwdriver bit and carefully dislodge the unit apart at the notches. See photos for illustration.

Top 3 notches

Left side notch

Right side notch

Bottom 3 notches


When all notches have disengaged, carefully pull apart and remove the top cover of dual zone climate control unit.

This is how it looks with the top cover removed.


Next, remove the plastic optical light distributor, which rests over the dual zone climate control circuit board.



Next, remove the dual zone climate control circuit board by hold the base and flopping it upside down.

IT WILL DROP OUT BUT MAKE SURE YOU CATCH IT!

Dual Zone Climate Control Circuit Board



and this is how it looks on the reverse side.



See video


STEP 4 - Prepare Replacement Bulbs

Colour match to OEM greatly depends on the overall combined colour mix. With non standard parts this is a challenge! Replace all 5 bulbs with new blue covers and bulbs with the aim to achieve the most best colour match as possible. The blue hue from the cover with yellow output from the filament yields a colour closely match to green. It might not be exact match to OEM, but will be close enough.

Take 5 blue covers and 5 bulbs and slip the covers on as illustrated in the photos shown below.




Next, take bulbs and cut down to length. Measure 1.5cm (15mm) from top of bulb and trim off excess wire at the bottom.



Use tweezers and bend wire to make like little feet. See photo for illustration.



The little bulb feet will aid good soldering mount to circuit board.


STEP 5 - Prepare The Circuit Board

Note basic soldering skills required

There are 5 OEM bulbs denoted on the circuit board as PL1, PL2, PL3, PL4, PL5. For illustration purpose I have numbered them respectively 1, 2, 3, 4, 5, see photo below.


Bulbs 2 and 4 are affected shown at the beginning. Bulbs 1, 3 and 5 were previously replaced by me but I will be replacing all 5 for a good colour match.

Heres PL1, this was previously replaced. Note how I used a non standard bulb holder.



The OEM bulbs are 5mm's in size and are held in place by a holder which provides addition support at the base of the bulb and sits just above the soldered joints to the circuit board. Prepare the circuit board by using soldering iron to remove the bulbs. You need to apply heat from the soldering iron to undo the solder joints and the joints will come apart as it becomes molten. De-solder and remove each bulb one at a time taking extra care not to damage the circuit board.



Remove bulb at PL1



CONTINUED AT POST #18
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Last edited by badgx; 11-07-2012 at 06:11 PM.
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post #2 of 50 (permalink) Old 11-03-2012, 07:23 PM
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Thank you for doing this. I am patiently waiting as most of mine are burnt out.

EDIT: got the bulbs and soldering gun ordered! Let do this!


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I'll keep an eye out on this and when you are done, review, possibly edit, then move it to the How Do/DIY section.

Thanks for your contribution!

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post #4 of 50 (permalink) Old 11-03-2012, 10:03 PM
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I have added a video,


XXXXXX video to follow,


So annoying...you have either added a video or you haven't

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post #5 of 50 (permalink) Old 11-04-2012, 01:48 AM
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This is my task today. I was planning to swap the filament bulbs for LEDs. I've had the panel apart it should be an easy swap.
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post #6 of 50 (permalink) Old 11-04-2012, 03:21 AM
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The light on the right half of the direction selection dial is completely gone in mine too. I am interested to find out the optioins to fix it..I would prefer to retain the same kind of light as the part that is still lit (original). In that case do I need to try finding certain LEDs or have to replace all lights with bulbs?
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post #7 of 50 (permalink) Old 11-04-2012, 07:23 AM Thread Starter
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Quote:
Originally Posted by MADDOG View Post
I'll keep an eye out on this and when you are done, review, possibly edit, then move it to the How Do/DIY section.

Thanks for your contribution!
Your welcome
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post #8 of 50 (permalink) Old 11-04-2012, 12:15 PM Thread Starter
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Quote:
Originally Posted by soapbox jonny View Post
This is my task today. I was planning to swap the filament bulbs for LEDs. I've had the panel apart it should be an easy swap.
Quote:
Originally Posted by Mr. C View Post
The light on the right half of the direction selection dial is completely gone in mine too. I am interested to find out the optioins to fix it..I would prefer to retain the same kind of light as the part that is still lit (original). In that case do I need to try finding certain LEDs or have to replace all lights with bulbs?
Unfortunately its not practical to install led's & resistors. I tried it 2 years ago and it doesn't work, basically the led's emit narrow beam localised light and when placed inside the unit would lit up locally, resulting in areas poorly lit or not being lit at all.

This repair is a like for like repair. The aim is hopefully to help you save or $$$. Under normal circumstance, a dealership would dispose of the old unit and replace it with a new one which costs plenty!

Last edited by badgx; 11-04-2012 at 12:21 PM.
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post #9 of 50 (permalink) Old 11-04-2012, 01:46 PM
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Just completed the swap and you are right it looks sh1t. Not enough light output from the LEDs. Very easy fix,I swapped all 5 bulbs in 30 mins. I'll watch this space for the right bulbs.
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post #10 of 50 (permalink) Old 11-05-2012, 11:19 AM Thread Starter
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Quote:
Originally Posted by therealfleen View Post
Thank you for doing this. I am patiently waiting as most of mine are burnt out.

EDIT: got the bulbs and soldering gun ordered! Let do this!


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Write up should be completed very shortly, just working on the last few bits for uploading
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