Dim and night lighting not working?

EY1AD

MEMBER
2007 TOYOTA COROLLA
1.6L
2WD
MANUAL
220,000 MILES

Hello,

I have the car listed above which has a problem I couldn't solve. I hope you can help me. When I move the indicator lever to the parking lights mode and the night light mode, the car dashboard remains illuminated, the light does not dim, and no night lights that used to work turn on. All the lamps are new and there is no broken fuse as I can see. Sometimes they work like today but after a while they stopped.
Best regards, Eyad.

6 Replies

EY1AD

MEMBER
4 POSTS

Here is video and photo you can see the problem:

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Friday, September 8th, 2023 AT 3:25 AM

KEN L

MASTER CERTIFIED MECHANIC
48,380 POSTS

Thanks for the video and image. First make sure the rheostat is turned down and if so, it sounds like the headlight switch has gone bad, there are the wiring diagrams for the system so you can see how it works and I have included how to change the switch out as well. Check out the images (below). Please let us know how it goes.

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Friday, September 8th, 2023 AT 4:32 PM

EY1AD

MEMBER
4 POSTS

Thanks for your answer.
I tried all that and I used a new indicator lever and the rheostat is down by the way it work as it should" but nothing changed the dashboard didn't Dim and the nightlamps didn't chain/get on.
As I wrote before, sometimes they work suddenly when I'm driving or before without I do anything fix I just hear a sound like tek coming from inside therefore I suspected that there is a broken relay.
I didn't know but think maybe it can be a DIM relay. Or any other relay or fuse have that job.
I'm sending more photos and videos and I hope they can help.
All lamps outside and inside reading and roof light working, and they are new.
Best regards again, Eyad.

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Sunday, September 10th, 2023 AT 2:08 AM

KEN L

MASTER CERTIFIED MECHANIC
48,380 POSTS

Thanks for the images and videos. I don't see a DIM relay in the wiring diagrams, can I ask if the running lights are working when you turn the headlights on? If so, I would swap out the daytime running light relay. Are all of the fuses in the wiring diagrams above good?

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Monday, September 11th, 2023 AT 11:28 AM

EY1AD

MEMBER
4 POSTS

In video nr2 you can see the DIM relay in the diagram. In that little box there are 2 relays for head light and dim and 4 fuses for high lights and low lights.

If I understand you right so when I turn the indicator lever to on so the low blub low lights and parking lights are on, and when I put the indicator lever down so the high light get on.

There is no problem in that relay as I think.

My problem is that it's very hard to drive at night without I can't see for example the cd player lights and AC lights and the dashboard keep high.

As I can see the fuses are good.

Do you know if there is a diagram for all relays in the car?
I found 2 relays behind the glove box. And they seem to be ok. And 3 relay on the driver side behind the fuses bix abd they are okay too.