2005 Jetta w/60K miles. The back lighting for the 3 climate control knubs in the dash just above the ashtray do not work. It is difficult to use them at night. What is the possible root cause? Blown fuse? It is hard to believe there is a separate fuse for just these 3 controls. All other interior lights in dash and car work okay.
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Re: No back light in the dashboard
No No. Just a burnt light bulb. You can replace it very easily. The knob on the controls can be pulled of. Use a rag or cloth to protect the knob then pull it out with pliers. Inside the little hole use a small piece of hose that fits over it and the bulb straight out. Just reconize the position of the bulb when you pull it out to align the new on correctly. Using the same pice of hose reinstall it. Then turn on the lights. The bulb will heat up the hose making it expand a little and using a little thin screwdriver or pin hold the bulb in place through the tube and pull off the tube. Then with your finger just make sure the bulb hasn't moved. Reinstall the knob in the same postion (only goes one way) and try the knob and the lights. Everything should work great. The bulb from VW is less than 10$, and is an easy do it yourself. You DO NOT have to remove the heater console to do this.
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General advise:Before removing anything check the fuses.For reacing the bulb:Must pull off the panel,remove the knobs by gently force them out,under must have some screw/clips to allow remove the panel.The panel may need help to pop from sides,don't force it,use plastic card/tool.Exersize on a old radio removing the control knobs.Some cars u have to unscrew the down side usually the ashtray.The bulb may be hard to identify,exersize removing bulbs on a wasted dashboard from a car/scooter...
Remove the ashtray and look for the screws that attach the ashtray bracket to the dash. Remove the ashtray bracket. The light fixture has a metal clip that you can squeeze to release the fixture from the ashtray bracket. (Sometimes it is easier to pry or push the clip gently sideways with a small screwdriver.) Replace the bulb and re-assemble.
The climate controll lights have been an issue with gm for years, The only fix is replace the circut board in the controll Head itself, Or replace it, Theres a guy on ebay sells these rebuilt for like 75.00 and you ship your old one back to him, This is the cheapest solution i know
This isn't a definite solution , however, I had the same issue when I got my 2000 ES300. The previous owner had installed a cellphone into the car that was wired into the stereo so that it would be heard through the speakers. It seems ridiculous now but back in the late 90's and early 2000's this was still a very common add on as cellphones were still pretty large, earpieces hadn't become common, car chargers weren't the norm, and battery life was horrible. This screwed up a lot of wiring. My gearshift light wouldn't come on and would sometimes flicker and my climate control lights wouldn't come on but would if i tapped it. I had the cellphone wiring removed and never had anymore problems with the lighted buttons on the radio or climate control. More than likely a wire is loose or has been tampered with. The 2000 and 2001 ES300's had solved all the led issues with the radio and dash so more than likely it's the wiring and not the actual lights in the radio and/or climate control. The gearshift bulb however turned out to just be bad and needed replacing. Its the same size bulb that goes into the glove box. It's a 1.2w type F bulb also known as a T5 bulb It's easy to replace, just pop off the wood bezel surrounding the shifter using a small flathead screwdriver prying it up from the bottom part of the wood closet to the cupholders in the armrest. Be gentle and work it loose and manuever/angle it so that you can get it past the shifter. (It will slide over shifter) Then locate the plastic retainers on your lettered/numbered shift indicator and pry it loose with the same small flathead screwdriver. You should now be able to see the bulb. You will probably need to use some needle nose pliers to get it out as it is a pretty narrow area surrounding the bulb. You might want to go ahead and throw an LED in there from eBay instead of a regular bulb. you can get a green one to match or go for a white led to have a nice contrast between the red, green and white letters on the indicator. (Note a green LED wont be that washed out light green color that is the scheme of the car, it will be a true green so it wont match perfectly.) If you opt for the normal bulb and the green rubber nipple on the old bulb is damaged or cannot be removed you can obtain a new one from Lexus or Toyota for a dollar or two. While your in there you should check the wiring harnesses to make sure its simply not disconnected or loose. Check around for other wiring issues s well. If it turns out there use to be a cell phone installed things can look like a tornado ripped through. If your comfortable removing the radio yourself to check for the lighted button issues you can do so removing the ashtray while you already have the wooden shifter bezel removed by removing the two screws at the bottom of the ashtray, then pop off the small wood strip directly above the ashtray, underneath the climate controls by inserting a small flathead in the top of the wooden strip in between the strip and the climate controls( middle of strip seems to work best, GENTLY) this will give you access to the screws retaining the climate controls which you will also unscrew, for the top radio screws pop off the clock/air vents above the radio using a pry/pop technique using a small flathead screwdriver and that will give you access to the top screws retaining the radio.
I had a problem with the dashboard indicators for 3 years. Kept all flluids properly leveled and changed, etc. while I put on an estimated 35000 miles on while driving blind, because I refused to pay Chrysler 1500 to 2000 to experimentally repair my vehicle.
A saint at a salvage yard on day said it was the thermostat control module (The panel controlling defrost, rear wiper, and climate control above the cup holders between the two front seats). I replaced it for 30 bucks (used) in 5 minutes, and low and behold, everything works again.
Turns out they use the control module as a pass through for a portion of the main harness. The module can short out (for what ever reason) and must create noise on the Comm wires, either directly or indirectly, causing the BCM and PCM stop speaking to each other. That in turns shuts down the dashboard.
You can test this without a new module, by simply pulling the module (4 screws: 2 on top, two on bottom behind small plastic cover plate), and disconnecting the wiring cable. You don't even need to disconnect the power, and thermostat dial cable. After disconnecting, start you vehicle, and see if your guages behave properly. If they do, replace the module.
trying to do the same on my 01. ready to change the bulb but can't find it anywhere. anyhow, here's how you do it:
remove the dash by taking out 2 screws behind the ashtray and 2 above the instrument cluster begin prying off the dash from the ashtray up, when you reach the heater vents stop. next take a flat head screwdriver and pry off the dash from the left side with the door open. work left to right till you reach the heater vents and it'll come right off. you don't necessarily have to unplug any of the electric connectors if you don't want to, but you;ll have to reach around the dash while working. all you need to do now is remove the heater control unit via the 4 screws around it, then unplug the electric harnesses from the back of it. make sure you remember which goes where. the bulbs are the 3 white (or is it 2 white and 1 grey) circles on the back of the control unit. just turn them with a flathead screwdriver and turn it over and give it a little bump to get 'em to fall out (or grab 'em with a needle nose pliers if necessary). anyhow, that's how it's done, question is, where do ya find the bulbs?
first remove the ashtray. there will be 2 screws where the ashtray used to be. remove those. then you just have to pry the panel off it will feel like it will break but then you hear a pop a couple of them. and then you replace the lights
The problems stated above seem to be caused by SP101 (specifically contact #1) being burned and contact 3 (dash lights), and contacts 2, 4, & 5 not receiving power. SP101 is located inside the fuse box under the hood. It is a white, 20 pin connector that splices wires internally. Either replace the connector and the purple/white wire, or solder/splice the wires together and solder or crimp. I don't know if the dealer sells the splice, I'm looking into that because I need it. I don't know why this splice malfunctions and the left side (identical) doesn't. Unfortunately, this is common in the Aveo and the dealer mechanics seem to be totally clueless!