Dash lights for door adjar, seat belt, and windshield washer turn on in sequence then all turn off

Who replaced the headlamp bulb ? Take it back . Everything your having problems with are all controlled by the BCM - body control module . May have crossed wire's ,shorted etc....
This vehicles BCM functions as the Power Mode Master (PMM). Refer to Power Mode Description and Operation for a complete description of the power mode functions.
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation .
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation .
• Bulb check--Refer to Instrument Cluster Description and Operation .
• Chimes--Refer to Audible Warnings Description and Operation .
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation .
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation .
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation .
• Heated seats--Refer to Heated Seats Description and Operation .
• Horn interface--Refer to Horns System Description and Operation .
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation .
• Interior lighting--Refer to Interior Lighting Systems Description and Operation .
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation .
• Parking brake state sensing--Refer to Brake Warning System Description and Operation .
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation .
• Rear compartment interface--Refer to Power Door Locks Description and Operation .
• Rear defogger--Refer to Rear Window Defogger Description and Operation .
• Remote function control--Refer to Keyless Entry System Description and Operation .
• RFA communication link--Refer to Keyless Entry System Description and Operation .
• Seat belt use sensing--Refer to Seat Belt System Description and Operation .
• Theft deterrent vehicle/content--Refer to Content Theft Deterrent (CTD) Description and Operation or Immobilizer Description and Operation .
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation .
• Wiper/washer--Refer to Wiper/Washer System Description and Operation .

This warning indicator is controlled by the BCM - body control module . You cant turn it off , you need to fix the faulty input switch that signals the BCM that the door is open .
Body Control Module
The various body control module (BCM) input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The BCM functions include the following:
• Battery rundown protection--Inadvertent power--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• BTSI/automatic transmission shift lock control--Refer to Automatic Transmission Shift Lock Control Description and Operation in Automatic Transaxle - 4T65-E.
• Bulb check--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Chimes--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
- Check gages
- Content theft deterrent
- Door ajar warning
- Headlamps ON
- Key-in-ignition
- Oil reset
- Park brake warning
- Seat belt not fastened
- Turn signal ON
- Vehicle theft deterrent
• Door lock interface--Refer to Power Door Locks Description and Operation in Doors.
• Exterior and interior lighting control--Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
- Automatic lighting control
- Backup lamps
- Daytime running lights (DRL)
- Fog lamps
- High/low beam head lamps
- Park brake lights
- Turn hazard lamps
• Gage control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Heated seats--Refer to Heated Seats Description and Operation in Seats.
• Horn interface--Refer to Horns System Description and Operation in Horns.
• Instrument cluster indicator control--Refer to Instrument Cluster Description and Operation in Instrument Panel, Gages, and Console.
• Interior lighting--Refer to Interior Lighting Systems Description and Operation in Lighting Systems.
• Key-in-ignition sensing--Refer to Audible Warnings Description and Operation in Instrument Panel, Gages, and Console.
• Parking brake state sensing--Refer to Brake Warning System Description and Operation in Hydraulic Brakes.
• Retained accessory power (RAP)--Refer to Retained Accessory Power (RAP) Description and Operation in Retained Accessory Power.
• Rear compartment interface--Refer to Power Door Locks Description and Operation in Doors.
• Rear defogger--Refer to Rear Window Defogger Description and Operation in Stationary Windows.
• Remote function control--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• RFA communication link--Refer to Keyless Entry System Description and Operation in Keyless Entry.
• Seat belt use sensing--Refer to Seat Belt System Description and Operation in Seat Belts.
• Theft deterrent vehicle/content--Refer to Theft Systems Description and Operation in Theft Deterrent.
• Washer solvent level sensing--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.
• Wiper/washer--Refer to Wiper/Washer System Description and Operation in Wipers/Washer Systems.

As far as the sliding doors , pull the fuse's

FUSE PANEL LOCATION
The fuse panel is located in the engine compartment. A label on the inside of the cover lists the fuse amperage and circuits protected.
volvo 850 fuses fuse panel layout service repair manual
FUSE PANEL IDENTIFICATION
Fig. 1: Fuse Panel Identification
Courtesy of Volvo Cars of North America.
WARNING: Always disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
* 1 - 15 Amp
Fuel Injection, Distributor Ignition, Automatic Gearbox
* 2 - 15 Amp
Fuel Pump, Alarm System
* 3 - 10 Amp
Courtesy Lights, Oil Level Sensor
* 4 - Not Used (1993-95)
* 4 - 10 Amp (1996)
Electronic Start Inhibitor (Immobilizer)
* 5 - 30 Amp
ECC Blower (Speed 4)
* 6 - 25 Amp
Central Locking System, Alarm
* 7 - 15 Amp
Audio System (Amplifier)
* 8 - 25 Amp (1993-95)
Power Antenna, Trailer Connector
* 8 - 40 Amp (1996)
Electronic Start Inhibitor (Immobilizer)
* 9 - 30 Amp
ABS, Traction Control System
* 10 - Not Used (1993-95)
* 10 - 15 Amp (1996)
Heated Rear Seat (If Equipped)
* 11 - 30 Amp
Heated Rear Window & Side Mirrors
* 12 - 10 Amp
Brake Lights
* 13 - 15 Amp
Hazard Flashers, Headlight Flashers, Alarm
* 14 - 30 Amp
ABS, Traction Control System
* 15 - 10 Amp (1993-95)
Audio System, Courtesy Lights, Door Open Light, Trunk Light, Glove Box Light, Remote Control Central Locking System,
Oil Level Sensor, Seat Belt Reminder
* 15 - 10 Amp (1996)
Audio System, Courtesy Lights, Door Open Light, Trunk Light, Glove Box Light, Remote Control Central Locking System,
Oil Level Sensor, Seat Belt Reminder, Data Link Connector
* 16 - 30 Amp (1993-95) Accessories
* 16 - 30 Amp (1996)
Power Antenna, Trailer Connector, Accessories
* 17 - 10 Amp
Key Reminder
* 18 - 25 Amp (1993-95)
Heated Front Seats, Power Mirrors
* 18 - 15 Amp (1996) Front Fog Lamps
* 19 - 15 Amp
Left High Beam Headlight
* 20 - 15 Amp
Right High Beam Headlight, High Beam Indicator
* 21 - 15 Amp
Left Low Beam Headlight
* 22 - 15 Amp
Right Low Beam Headlight
* 23 - 10 Amp
Left Parking Light, License Light
* 24 - 10 Amp
Right Parking Light, Bulb Failure Warning Sensor
* 25 - 10 Amp
Rear Fog Lamps, Fog Lamp Indicator
* 26 - Not Used (1993-95)
* 26 - 25 Amp (1996)
Heated Front Seats, Power Mirrors
* 27 - 15 Amp
Back-Up Lights, Turn Signals
* 28 - 10 Amp
Cruise Control, Heated Rear Window, Seat Belt Reminder Light, Shiftlock, Bulb Failure Warning Sensor, Heated Rear Seat
* 29 - 15 Amp
ABS, Traction Control System
* 30 - 10 Amp
Cigarette Lighter
* 31 - 25 Amp
ECC, ECC Blower (Speeds 1-3)
* 32 - 10 Amp
Audio System, Remote Controlled Central Locking System
* 33 - 15 Amp (1993-95)
Power Seats, OBD Test Socket, Tailgate Washer/Wipe (Wagon)
* 33 - 15 Amp (1996)
Power Seats, Tailgate Washer/Wipe (Wagon)
* 34 - 25 Amp
Windshield Wiper/Washer, Horn, Headlight Washer/Wiper
* 35 - 10 Amp
Instrument Lights, Sun Roof, Traction Control System
* 36 - Not Used
* 37 - Circuit Breaker
Power Windows, Power Sun Roof
* 38 - Not Used
* 39 - Circuit Breaker
Drivers Power Seat
* 40 - Circuit Breaker
Passengers Power Seat
RELAY PANEL LOCATION
The relay panel is located at the left corner of the instrument panel.
i copied this off a volvo site Hope this helps

could mean anything from your windshield washer fluid is low to a bulb is out on the car..im pretty sure its just a warning light, u have to start up the power in the car (ACC) but not actually turning the engine..then use the button on the end of the blinker wand to access the "check control" this should tell you whats up

Shoot a little wd-40 in all the door locks about 2 times a year and work the key, should keep them free.

control module messing up?? change it..

Windshield Washer Pump Removal & Installation To Remove:

1. Remove the air cleaner assembly.
2. Remove the bolts.
   
   
3. Position the pump and reservoir aside.
4. Disconnect the electrical connectors.
5. Disconnect the washer hose.
6. Remove the pump and reservoir.
7. Remove the washer pump.

WARNING
Windshield washer solution contains methanol which is poisonous. Observe all cautions and warnings indicated on label of washer solution container.
NOTE: Windshield washer fluid should be collected in a container after the windshield washer hose is disconnected.
To Install:
WARNING
Windshield washer solution contains methanol which is poisonous. Observe all cautions and warnings indicated on label of washer solution container.

1. Install washer pump in reservoir.
2. Install washer pump reservoir assembly.
3. Connect washer hose.
4. Connect washer electrical connector.
5. Install air cleaner assembly.

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The windshield wiper fluid pump is located in the tank which is not in the heater motor or defroster area in the dash.

The defroster/heat control door is located in the dash board area:

Air Door Actuators, Cables or Motors Removal & Installation Air Inlet Door Vacuum Control Motor To Remove:

1. Remove the instrument panel lower insulator cover.
2. Disconnect the vacuum connector.
3. Remove the control arm clip and the spring.
4. Remove the nuts and the air inlet door vacuum control motor.

Air inlet door vacuum motor mounting screws

To Install:

1. Install the vacuum motor on the mounting bracket.
2. Connect the control arm and spring.
3. Connect the vacuum hose to the vacuum motor.
4. Install the lower instrument panel lower cover.

Floor Defrost Door Vacuum Control Motor To Remove:

1. Disconnect the negative battery cable.
2. Remove the left lower dash insulator panel and disconnect the lamp.
3. Remove the two pin-type retainers and remove the fill panel.
4. Remove the DLC mounting screws.
5. Detach the vacuum line.
6. Remove the lighting module.
7. Remove the screws and the bracket.
8. Remove the floor/defrost door vacuum control motor.

Floor/Defrost vacuum motor mounting screws

To Install:

1. Connect the vacuum lines and install the floor/defrost vacuum motor.
2. Install the bracket and lighting control module.
3. Install the DLC bracket and mounting screws.
4. Install the fill panel.
5. Install the left lower dash insulator panel.
6. Connect the negative battery cable.

Panel Door Vacuum Control Motor To Remove:

1. Remove the instrument panel.
2. Reach through the door opening and remove the pin.
3. Disconnect the panel door vacuum control motor vacuum line.
4. Remove the screws and remove the panel door vacuum control motor.

To Install:

1. Install the panel door vacuum motor.
2. Connect the vacuum line to the panel door motor.
3. Reach through the opening and install the pin to the linkage.
4. Install the instrument panel.

You need to remove the door ajar sensors from the doors and clean and lube them. You must remove the interior door panel then remove the door latch. Then twist the switch out of the latch to work on it.

the latch may need to be cleaned from dirt and dust then sprayed with penetrating lube. It does require removing the latch from the door.

Door Ajar
The door ajar signal comes from door open warning lamp switches (14018) located in the door jamb. When any door is open, the generic electronic module (GEM) will cause the door ajar warning indicator to be illuminated on theinstrument cluster . The warning indicator will turn off when the warning condition is removed (the door is closed). You could have a bad door ajar switch .A bad seat belt buckle switch and a low washer fluid sensor bad as well . Finding wiring diagrams for these circuits an doing voltage testing Is the proper way to diagnose problems like this . After four different GEM module . The seat belt buckle switch has B+ voltage on one wire , Brown with lite blue stripe . The other wire goes to ground G-300 . When the buckle is closed voltage goes to ground G- 300 . The GEM will see this an turn off the light . You do not have a bad GEM . This is probably what's wrong with the other lights . Find wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter vehicle info. year , make , model engine size . Under system click on body & accessories , under subsyetem click body controls . Hit the search button , click on the blue link . The diagram will show pin # for each of the lights your having problems with. Test voltage AT each pin . if there is voltage , don't know if system voltage or a five volt reference voltage . There is nothing wrong with the GEM . U better find yourself a better mechanic .
The Trainer 32 How To Read An Automotive Block Wiring Diagram

The Trainer 29 Understanding How Electrical CIrcuits Work and How to Test...

ECM Inputs and Outputs Diagnosis You better get your so called mechanic to check out some of these videos . The dealer probably didn't want to mess with it. They can just look at some peoples vehicles an think this won't be worth messing with . They do it at the one I work at .