Question about 2001 Toyota Highlander
The body control module is malfunctioning causing the car alarm to go off, the door locks to malfunction and the vac light to be on. How do you change this and what is the part number?
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Posted on Jan 02, 2017
You have one of two possible problems.
1) The temperature shaft retention nut is loose behind the knob
2.) The wires to the potentiometer part of the temperature may be broken.
Either one is common to this vehicle. The replacement of the AC controller is about 900 dollars. If the wires are broken, they can easily be reattached to the circuit board via soldering. What you would have to do is remove the control box from the dash, and disassemble it. Once the unit is apart, there are 3 wires from the temp knob to the circuit board that need to be re-soldered. The unit CAN be repaired, as opposed to the expense of replacing it.
Posted on Apr 23, 2009
SOURCE: Malfunction Indicator Lamp
Take your car to your local autoparts store and have them pull the codes - this is free at most stores. Post the codes when you're done. This can be caused by anything - even as simple as not tightening your gas cap (you should hear the clicks - it doesn't damage the cap).
Posted on Aug 07, 2009
Hello. Those three lights are all designed to illuminate when you have an issue with the electronic sensors on the engine. To properly identify the reason for the lights being on, you will need to get your vehicle hooked up to a scan-tool. AutoZone provides this service for free. Get the car scanned, and get the codes stored in the memory of the car's computer back to us for further assistance.
Posted on Nov 30, 2009
If your car has an alarm with a separate remote, it is a separate system and it is probably self-arming. When you lock the doors with the key central lock, the alarm gets armed by the RAV4 being OFF and the door locking action. When you unlock the doors with the key, the alarm is still armed because the key is not comunicating with the alarm just the cars factory keyless system.
Posted on Apr 10, 2010
When your VSC (Vehicle Stability Control) light comes on, it means your car has been forced to take evasive action to avoid a dangerous situation. For example, if you're driving on an icy or wet, slippery road, and take a turn too sharp or accelerate too quickly, the vehicle will automatically reduce acceleration or apply pressure to the brakes to prevent the car from losing control. In this situation the VSC indicator light will light up to alert you that the action was taken, and remind you to slow down - or to be extra careful. Be safe!
Posted on Dec 10, 2010
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Dec 05, 2017 | Buick Cars & Trucks
The ignition is in the ON position.
The vehicle is shifted out of PARK.
The BCM will then unlock the doors when the ignition is placed in the OFF position. Do the exterior lights flash as well as the horn sounding ?
Body Control Module (BCM)
Content Theft Deterrent
system is an internal function of the Body Control Module (BCM) which utilizes class 2 serial data and various switch input information to perform CTD functions. When the BCM detects an unauthorized entry, it activates the horns and exterior lamps.
When the BCM detects an unauthorized entry, the BCM enters the alarm mode. The BCM activates the horns and exterior lamps for 2 minutes. This is followed by a 3 minute time-out with the horn no longer active. If no new intrusions are detected after the time-out, the horn is not active. The system must be disarmed or the intrusion condition removed after the time-out for the system to exit alarm mode.
Dec 23, 2015 | 2006 Chevrolet Cobalt
DOOR LKS fuse
Driver door lock actuator
Driver door lock switch
GMLAN serial data link
Keyless entry transmitter
Passenger door lock actuator
Passenger door lock switch
Remote control door lock receiver (RCDLR)
The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
If the value does not change, refer to Door Lock Switch Malfunction.
Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.
Aug 12, 2015 | 2009 Pontiac Solstice Convertible
Command the driver door and passenger door lock actuators to LOCK and UNLOCK with the scan tool, the doors should LOCK and UNLOCK when changing between commanded states.
If a door lock actuator does not perform the LOCK and UNLOCK functions, refer to Door Lock Malfunction
DTC B3130 00: All Door Unlock Circuit
DTC B3135 00: All Door Lock Circuit
Aug 09, 2015 | 2010 Chevrolet Impala
Jul 17, 2013 | Cars & Trucks
Whenever this warning light or any
other stays on in the dash it is indicating that the systems control
module (or the system sensor in the case of lights like low oil
pressure, door open indicators etc.) has detected a fault, it then
disables the system (this applies to ABS,TCS, TCM, SRS, TPMS, MIL,
CEL and BCM faults and others) as long as the light is on. You must
now have the dealer hook up a special electronic diagnostic tool and
"scan" the system for the fault code that is stored for the
Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System, MIL Malfunction Indicator Lamp, CEL Check Engine Light.
Nov 11, 2012 | Cars & Trucks
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