tired replacing bulbs fuses etc. but to no avail.stuck dont know what to do

 

everything works just fine except the dash lights all fuses good,its on a 2002 acura tl 3.2

 

Under the sunroof and foglight switches theres the dimmer adjust it if not the problem is elsewhere.

 

Still no dash lights ,New bulbs, junkyard dimmer but this one is little different it has the all on switch but plug is the same.i do have passenger side headlight out it needs a ballast would that do it?

 

Recheck fuse #9 (7.5A) located in the driver's side underdash fuse panel and also fuse #13(7.5A) located in the passenger side's panel. Could be something loose behind the dash panel such as a poor connection or ground ? Try checking for power at the dimmer. Maybe a problem with the multiplex unit or switch if all else proves ok.

 

all fuses are good except the one for the right side headlight,the ballast is blown could that be the issue?

 

Did you ever get this resolved?
I just bought a 2002 TL Type-S, and am having the same issues...no instrument cluster lights when I turn the headlights on (or climate control lights). I turn the lights on and the Odometer/Temp lights go dark too. Fuses are good, replaced the dimmer switch.

I've seen a lot of threads about people with this issue but no one saying how they fixed it (when it's not the fuses).

I've also read somewhere it may be the dashboard wiring harness but I would probably directly wire up a backlight in the instrument cluster before replacing the dashboard wiring harness.

 

Welcome 2002TL-Type-S !!!
If all else fails, ya may want to make sure the the dash panel's wiring harness connectors are all secure.
Check the "DIY"s and try searching previous threads on procedure tips.

 

Question, Do you hear a continuous beep when inserting the key in the ignition switch with the door open ?
The fuses might look good but are they getting power, a test light is mandatory to pin point the issue.

 

Yes I do get the beep.

I guess the needles are supposed to be illuminated when you start the car too...none for me (with or without headlights). No Shifter lights either in the console (I have the PRND5 lights in dash, but those go out when I turn the headlights on). Also my cruise control light works, but when I turn on the headlights it goes off too. However the VSA light will come on when the headlights are on (if I turn the VSA off).

The odometer/temp gauge is bright, until I turn the headlights on. Then it goes dark.

And it's not just the instrument cluster lights, it's also the climate control lights...when headlights are off, the climate display is illuminated. When I turn the headlights on the display goes dark (and before I replaced the stock radio the radio lights would shut off when I turned the headlights on).

So since it's spread out over multiple systems I wouldn't think it would be something like a loose harness. Also I did check the climate control harnesses when I bypassed the factory EQ to get the sub working.

Driver's multiplex unit, maybe? I'm thinking I just need to take it to my mechanic ask him to fix it, or tell me what is wrong.

 

Theres still hope, The combination switch is the issue from what i see on the diagram.
Does the license plate and side marker light up when the headlights are on ?

 

Yes they do. I've poured through the Alldata diagrams and can't make sense of them.

 

I've blown the "Small Lights" fuse so I know what it looks like when it's out!

 

Service manual is much better for this issue.
I didn't connect the dimmer on mine and it still lit up the dash just no control on how bright you want it. See what results you get from that test.

 

Disconnecting the dimmer entirely just results in the same: no activity whatsoever on the dash lights.

 

Heres the Diagram, use a test light for quicker results

 

Thanks for the diagram. Where would you suggest I wire up the test light?

 

Ground the test light to a metal surface then verify that it lights up by testing a known good circuit (a fuse behind the fuse panel). The diagram shows RED/BLK to be a positive, test that circuit, if it the test light lights up and no lights on the dash come up theres a problem on the ground side of the circuit.

 

Check the connectors on the combination switch it could be a melted connector.
Before buying parts its a good idea to check stuff like this.

 

Update:

It was the driver's multiplex unit! I replaced the drivers fuse box and multiplex unit with one I found on eBay for $60. Took maybe 90 minutes to do, and now I have dash lights!

Erick, that diagram was awesome because it pretty much listed every system that was not working. Thanks so much!

 

Very informational thread! I am having a similar problem in that my dashboard cluster lights are not coming on. Other symptoms I have noticed: the alarm that should go off when I leave my lights on and take my keys out doesn't work & the light that illuminates my ash tray/coin holder doesn't work. I've checked my fuses and all appear to be fine.

So my initial instinct is that I could buy a drivers side multiplex unit and see if replacing that would help. However, when I turn on my lights, my headlights work but my rear lights do not come on. If I am reading everything correctly, those lights are controlled by a fuse in the fuse box under the hood of my car. So now it isn't making sense as that appears to have nothing to do with the drivers side fuse box??

Another question I have is can the drivers side multiplex unit work partially? For example, my dashboard cluster light is not working, but my turn signals are. And both fuses appear to be in that same unit.

My car is a 2003 TL Type S.

Any help at all would be appreciated!

 

^^Your small light or similar fuse is blown out on the passenger side kick panel. When my tail lights would not work that was the issue.



I have the same issue in my newly acquired 03 CLS6. None of the instrument cluster lights, switches, radio, or climate control light up when I turn my parking lights or headlights on. The odometer back light is bright at first and turns dark when the parking lights are on.

I have checked every connector for power and ground on every problem area and the one thing I found is the solid red wire is a ground going to the driver multiplex unit and it has power running through it when the parking lights are turned on.

This red wire is the same wire that goes to every affected area and it goes directly into the micu. What is funny is I depinnned the red wire from the micu and hooked it up to a body ground and it still does the same thing. Next order of business is to put in a good used micu to see if that fixes the problem.

 

 

 

 

 

I have a 2002 Acura TL Base.
Basically my issue started a month ago, one night when i was driving at night my headlights turned off while i was driving... after about a day of not having any clue what the issue was i got mad and kicked center (right side , next to the accelerator pedal, idk the technical term.) and well it worked...... for about a week. then the issue would happen again where my headlights would turn off while i drive. It got worse over time though, my AC would also turn off and on when my headlights would go out. Then my AC would do the same thing even when I didn't have my headlights on during the day.. I have absolutely no idea what the issue is other than it being an electrical issue. But I don't exactly know what.. I need some help immediately,
(Also my cruise control doesn't work but that's not important right now)

 

I replaced dashboard with used dashboard one from eBay.

 

can bad cluster effect the cars starting?

 

I sincerely doubt that it can, the dashboard just outputs information from other sections of the car. Now, if part of the dash isn't working because it's not getting information from another part of the car, that could be an issue somewhere else in the car that you need to look at.
What's going on with your car?

 

so I got a question if it was the aftermarket stereo what was it cause I have same problems and have a radio put in it but i don’t see anything stereo wise that would have to be hooked up to continue power of dash lights I got a whole mother plug that isn’t hooked up but dk where it would go as I just got the car.

 

professional advice would be nice sorry but no need to replace your whole dash and all light for this problem especially after installing an aftermarket stereo it’s obviously a wiring issue. Wish I could get bob to word his comment on this again in different wording for slow folks like me BOB COME BACK WE NEED YOU!