Interior lights The four back interior dome lights won't turn on. The Light Control Switch doesn't turn them on either. I checked the fuse and switched it out just to be sure and it still doesn't work. Any suggestions?

If the dome lights on your 2007 Hyundai Tucson do not come on when the driver's side or passenger doors are open, but they do work when you press the interior dome light buttons, there are a few things you can check to try to determine the cause of the issue:

1. Check the door switches: Make sure that the door switches, which are located on the inside of the doors, are working properly. If the switch is not working, it will not send a signal to the dome light to turn on when the door is opened.
2. Check the wiring: Check the wiring that connects the door switches to the dome light. Make sure that the wiring is not damaged or corroded, and that all connections are tight.
3. Check the dome light fuse: Check the fuse for the dome light in the vehicle's fuse box. If the fuse is blown, replace it with a new one of the same amperage.
4. Check the BCM(Body Control Module): The Body Control Module controls the door switches and the dome light. Make sure that the BCM is not malfunctioning.
5. Check the Sunroof switch: Make sure that the sunroof switch is not malfunctioning, sometimes that switch is used to turn on the dome light, if the switch is not working the dome light will not turn on.

It's important to have a professional technician to diagnose the issue and confirm what the problem is before trying to fix it. If you're not comfortable with troubleshooting the issue yourself, it's best to contact Hyundai dealership or a mechanic for further assistance.
https://amzn.to/3XfuL5A
https://amzn.to/3XvaZTe

There's not likely a relay involved in a dome light circuit. Did this problem start after you changed the headlight switch? I would be looking for a wrong, shorted or swapped connection on the headlight switch (assuming that's where the dome light is turned on from).

If the lights work on the switch then you have tested the fuse. The fuse is listed in the owner's manual. Is this problem true for all four (or two) doors? None turn on the interior lights when opened.

make sure light switch is turned off the full left position, if light is still on you probably have a bad door switch

Those should be map lights and there should be a switch for them.
On some cars you can program the interior light control to turn them on with the dome light.
Check your owners manual.

Does the van have remote keyless entry (RKE) system ?
Interior Lighting System Description
Vehicles with the optional remote keyless entry (RKE) system have interior lighting controlled by the body control module (BCM).
This vehicle uses a delayed interior lighting system.
The system functions as follows:
• The dome lamps will illuminate when any door is opened.
• The dome lamps will remain on for 20 seconds after the last door is closed.
• The delay is canceled and the dome lamps will go out when the ignition switch is turned to the ON position.
• The illuminated entry function will not operate when the dome lamp defeat switch is in the OFF position.
• The interior lighting system is protected from battery rundown by the retained accessory power (RAP) system. The RAP system functions by shutting down interior lights after 10 minutes (when ignition is OFF).

Interior Lights Circuit Description
When the interior lamps circuits are closed/enabled, the courtesy lamp relay is activated by the two following coil circuits:
• CKT 690 (GRY/BLK) which is the courtesy lamp enable output of the body control module (BCM) driving the coil side of the relay.
• CKT 1732 (ORN) which is the coil output side of the relay going to the potential grounding switches/sources.
When the courtesy lamp relay is enabled, CKT 156 (WHT) (courtesy lamp output) is enabled by the closed contact at the relay and then grounded by CKT 750 (BLK) at G110.
Some of these circuits can also be activated with the headlamp and panel dimmer switch. When this happens, the coil output side of the inadvertent power relay is grounded to the body control module (BCM) via CKT 1393 (DK BLU)
CKT 40 (ORN) from the courtesy fuse drives both input sides of the inadvertent power relay. When the contact is pulled closed, CKT 1732 (ORN) is supplied power, thus driving any lamps/circuits attached that circuit and providing ground.
The body control module (BCM) also monitors the following four door inputs:
• CKT 49 (DK BLU) -- LH door jamb switch input
• CKT 54 (ORN) -- RH door jamb switch input
• CKT 775 (PNK) -- Side door jamb switch input
• CKT 656 (YEL) -- Rear door jamb switch input/liftgate strut switch input (depending on option content)
When the doors are closed, the body control module (BCM) is in a floating state of 0-2 volts. When the doors are opened, the courtesy lamp relay is activated, sending power to the courtesy lamps.
The headlamp and panel dimmer switch also activates the following interior courtesy lamps when the switch is placed in the PARK or HEADLAMP ON positions:
• RF power window switch
• RH power door lock switch
• LH power window switch
• LH power door lock switch
• LH outside rearview mirror control switch
• Rear radio control head
The dome lamps can be disabled by closing the dome lamp defeat switch located on the headlamp and panel dimmer switch.

--------------------------------------------------------------------------------
Courtesy or Dome Lamps Inoperative
Step
Action
Value(s)
Yes
No
Important: Verify functional bulbs before beginning diagnostic procedure.
1
Did you perform the Lighting Diagnostic System Check?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Lighting Systems
2
Are all of the courtesy/dome lamps inoperative?
--
YES - Go to Step 6
NO - Go to Step 3
3
Activate courtesy/dome lamps
With DMM, check for battery voltage from inoperative lamp CKT 1732 (ORN) to ground
Is battery voltage present?
B+
YES - Go to Step 4
NO - Go to Step 5
4
Repair open in CKT 156 (WHT) between inoperative lamp assemply and S214.
Is the repair complete?
--
NO - Go to Step 10
--
5
Repair open in CKT 1732 (ORN) between inoperative lamp assemply and one of the following splices:
• S258
• S301
Is the repair complete?
--
Go to Step 10
--
6
Turn the courtesy lamp switch to the ON position
Check for battery voltage at BCM C2 cavity B12.
Is battery voltage present?
B+
Go to Step 7
Go to Diagnostic System Check - Body Control System in Body Control Systems
7
Verify continuity of the following three circuits with DMM:
• CKT 1732 (ORN) between courtesy lamp relay and body control module
• CKT 156 (WHT) between courtesy lamp relay and S214
• CKT 750 (BLK) between courtesy lamp relay and S206
Are all of the circuits functional?
--
Go to Step 8
Go to Step 9
8
Replace courtesy lamp relay.
Is repair complete?
--
Go to Step 10
--
9
Repair the inoperative circuit.
Is the repair complete?
--
Go to Step 10
--
10
Operate the system in order to verify the repair.
Did you correct the condition?
--
System OK
Go to Step 2

The interior light are controlled by the Body Control Module (BCM).
Check the fuse for the BCM. If the fuse is OK, then try to disconnect the car battery for about 10 minutes to reset the BCM. If resetting the BCM doesn't work you may have to replaced it.

hello,interior light you means front dome light?front dome get power supply from control unit under your fuse box,if you want remove your dome light, check wiring color light brown in socket mark c if no voltage,check wiring for continuity up to control unit,if you think it complicated,send to your dealer,ty

Did you check the switch next to the interior light on the roof? Honda's have a switch position that turns off the dome light completely, so it won't work when the doors are opened or not shut tightly. There are 3 positions, dome light on all the time, dome light on only when door is opened, or ajar, and dome light off. I must say, I love Honda's, but I find this switch annoying!

yes there is a relay switch in engine compartment or under dash