Truck will not open using the remote control

Adding an auxiliary backup light with a remote control involves a few steps. Here is a general overview of the process:

1. Choose your backup light: Select an appropriate backup light that is compatible with your vehicle's electrical system and can be controlled with a remote. You may want to consider factors such as the light's brightness, durability, and mounting options when choosing a backup light.
2. Plan the installation: Determine where you want to mount the backup light and where you will run the wiring. You may need to drill mounting holes and install brackets or other hardware to secure the light in place.
3. Wire the backup light: Connect the backup light's positive and negative wires to your vehicle's backup light circuit. This circuit is typically located at the rear of the vehicle near the taillights. You can use a test light or multimeter to locate the correct wires.

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What make , model an year vehicle ? Wrench warning light , for most vehicles has to do with electronic throttle control . Video's on youtube showing how it work's .

Sounds like your instrument cluster is defective. It basically controlls all vehicle electronics indie the vehicle. It replaces what was known as a Body Control Module (BCM). Here is an explanation of what the cluster involves. The ElectroMechanical Instrument Cluster (EMIC) in this model also includes the hardware and software necessary to serve as the electronic body control module and is sometimes referred to as the Cab Compartment Node or CCN. The following information deals primarily with the instrument cluster functions of this unit. Additional details of the electronic body control functions of this unit may be found within the service information for the system or component that the EMIC controls.
The EMIC is designed to allow the vehicle operator to monitor the conditions of many of the vehicle components and operating systems. The gauges and indicators in the EMIC provide valuable information about the various standard and optional powertrains, fuel and emissions systems, cooling systems, lighting systems, safety systems and many other convenience items. The EMIC is installed in the instrument panel so that all of these monitors can be easily viewed by the vehicle operator when driving, while still allowing relative ease of access for service.
Accessory Power Delay Relay Control - The EMIC provides timing and control for the accessory power delay relay based upon inputs from both the ignition switch and the door ajar switches.
Audible Warnings - The EMIC electronic circuit board is equipped with an audible tone transducer and programming that allows it to provide various audible alerts to the vehicle operator, including chime tones and beep tones. An electromechanical relay is also soldered onto the circuit board to produce audible clicks that emulate the sound of a conventional turn signal or hazard warning flasher.
Automatic Headlamps Control ,Brake Lamp Control,
Brake Transmission Shift Interlock Control, Compass Mini Trip Computer Support, Electronic Transfer Case Interface, Enhanced Accident Response Support, Exterior Lamp Load Shedding , Exterior Lighting Control , Exterior Lighting Fail-safe, Fuel Level Data Support , Heated Seat Control, Horn Control, Entry (RKE) or Vehicle Theft Security System (VTSS), Interior Lamp Load Shedding , Panel Lamps Dimming Control, Power Locks, Remote Keyless Entry, Remote Radio Switch Interface, Vehicle Theft Security System Control, Wiper/Washer System Control, The microprocessor-based EMIC hardware and software uses various inputs to control the gauges and indicators visible on the face of the cluster. Some of these inputs are hard wired, but most are in the form of electronic messages that are transmitted by other electronic modules over the Controller Area Network (CAN) data bus.

Your best bet , take it to the dealer

It comes through the radio an left front speaker .
The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the left front speaker. The radio receives audible warning requests via the class 2 serial data line. If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. The Multifunction Alarm generates the audible warnings on vehicles with RPO UL5 -- Radio Delete Option. The following lists the audible warning priority and the pulse rate:
The radio activates the door ajar audible warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency of a medium rate and at a continuous duration. The door ajar warning sounds and the door ajar indicator illuminates when the following occurs:

1. The body control module (BCM) determines that the driver's door is open and the signal circuit low. The IPC receives a message via class 2 from the BCM requesting illumination of the door ajar indicator.
2. The vehicle is not in park. The BCM receives a class 2 message from the PCM indicating the gear position.

Class 2 Serial Data Link
The class 2 serial data link allows the following modules to communicate and share data with each other:
?€¢
Auxiliary Power Drop Connector

?€¢
Body Control Module (BCM)

?€¢
Driver Information Center (DIC)

?€¢
Electronic Brake Control Module (EBCM)

?€¢
Instrument Panel Cluster (IPC)

?€¢
Powertrain Control Module (PCM)

?€¢
Radio

?€¢
Remote Playback Device-CD Player (if equipped with UQ3)

?€¢
Inflatable Restraint Sensing and Diagnostic Module (SDM)

?€¢
Vehicle Interface Unit (VIU) (if equipped)

The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.

Since it's highly unlikely all your instrument panel bulbs are blown (that usually only occurs if a faulty alternator puts out excessive voltage), it can be several things.
Have you checked your taillights and brake lights? Reason I say, many vehicles are designed to not illuminate the instrument panel lights if both taillights are out (a safety feature and tell-tale warning to the driver). If the taillights are ok, it may have a bad dimmer resistor for the inst panel lights, presuming the fuse that controls the dash lights is good. The other possibility is a faulty ground connection to the instrument panel circuit board or wire loom.

Hi Edward:
In dashboard, your THEFT warning light is blinking? If the answer is yes, your antotheft system is activated and will need restart and resynchonized. This occurs when battery is disconneting or other un-authorized key is used.

Vehicles equipped with Vehicle Theft Security System (VTSS) are protected from vehicle theft andunauthorized entry. VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made toenter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillights andparking lights will flash, and engine will be prevented from running.

VTSS system arms when ignition is off, vehicle is exited, door is locked using power door locks and door isclosed. Alternatively a remote keyless entry transmitter can be used to arm system. A security light on panelwill flash for 15 seconds to indicate system is arming. At the end of 15 seconds, if no door, hood or tailgate isopened, system is armed.

If alarm is triggered, horn will sound for 3 minutes, and lights will flash for an additional 15 minutes. If hornsounds 3 times when either front door is unlocked, vehicle has been tampered with (tamper alert). If doors arelocked manually or with key, system will not arm (manual override). If an unauthorized entry does occur, VTSSsystem signals Powertrain Control Module (PCM) to prevent vehicle from being driven. PCM reduces injectorpulse width to zero, causing a start and stall condition.

System can be disarmed with the keyless entry transmitter, or by using key to enter vehicle. In both instances, if alarm was activated, vehicle alarm will be terminated. If battery is disconnected and reconnected, alarm will beactivated and it will be necessary to disarm system as indicated.

Please, send us some email account to send you this procedure in PDF format file.

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Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4 way tow vehicle side.
4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5 way tow vehicle side.
5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6 way tow vehicle side.
6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.

6 way tow vehicle side.
6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.

7 way RV flat blade tow vehicle side.
7 way RV flat blade trailer side.

GO TO THIS SiTE TO CHECK THE FUSE BOX!
http://vwtech.no-ip.info/images/golf/post90.gif

This are the FUSE and RELAY number SLOT!
Fuse No. Description Ampere Rating 1 Headlight, low beam, left 10 2 Headlight, low beam, right 10 3 Instrument panel lights, license plate lights 10 4 Glove compartment light 15 5 Wiper/washer 15 6 Fresh air blower 16-valve only: Air conditioning 20 7 Taillights, side marker light, right 10 8 Taillights, side marker light, left 0 9 Rear window defogger 20 10 2.0 16-valve only: Fog lights 15 11 Headlight, high beam, left,High beam indicator light 10 12 Headlight, high beam, right 10 13 Horn 16-valve only: Radiator cooling fan 10 14 Back-up lights, washer nozzle heaters 10 15 2.0 16-valve only: Engine electronics, stabilizer valve, cold start valve 10 16 Instrument panel warning lights, 16-valve only: Multi function indicator 15 17 Emergency flasher switch, turn signals 10 18 Fuel pump, oxygen sensor heater 20 19 Radiator cooling fan, air conditioning 30 20 Brake lights, cruise control 10 21 Interior lights, digital clock 16-valve only: Luggage compartment light,multi function indicator, central locking 15 22 Radio, cigarette lighter 10
Relays Relay No. Description 1 Air conditioning 2 Open 3 Digifant control unit 4 Load reduction relay 5 Low coolant level control unit or Open 6 Emergency flashers 7 Rear Wiper 8 Intermittent wipers 9 Seat belt warning system control unit (possibly headlight warning too?) 10 Fog lights 11 Horn 12 Fuel pump (except diesel)Glow plugs (diesel) 13 Radiator cooling fan after run (except 16-valve)2.0 16-valve: Starter interlock relay 14 Automatic trans., coolant temperature indicator,starter interlock relay (except 2.0 16-valve)2.0 16-valve: Radiator cooling fan after run 15 ABS pump relay 16 ABS relay 17 Heated seat control unit, driver 18 Heated seat control unit, passenger, or power seat circuit breaker 19 Automatic transmission 20 Open 21 Power window relay, ABS hydraulic pump fuse 22 ABS valves fuse 23 Air conditioning, power seat fuse 24 Power window fuse

I think it is a faulty light warning... Check to see if you have a blown taillight/brake light.