Content of the material
- Publication number
- US4395064A US4395064A US06/253,909 US25390981A US4395064A US 4395064 A US4395064 A US 4395064A US 25390981 A US25390981 A US 25390981A US 4395064 A US4395064 A US 4395064A
- United States
- Prior art keywords
- blocking lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired – Fee Related
An electrical lock mechanism for servo locking and unlocking the trunk lid or hatch lid of an automobile by means of a motorized bolt engaging a catch to close the door is disclosed. The lid supports a fixed catch and the body of the vehicle supports a compact motor unit comprising an electric motor, controlled from a distance by impulses and capable of sequentially pivoting a rotating bolt and its blocking lever. The motor is connected to the bolt and lever by two disengageable link rods.
4. Manual locking mechanism works fine
If you try to unlock the trunk with the fob or switch in your car and it doesn’t work, but the manual lock works fine, this is a clear cut signal that your trunk lock actuator is broken. There is no repair that can be done at this point and you will have to contact a mechanic so they can replace the trunk lock actuator.
Anytime you notice any of the above warning signs, it’s a good idea to get the issue fixed sooner rather than later. Although a broken trunk lock actuator is more of an inconvenience than a safety or drivability issue, it’s still important to the overall operation of your vehicle.
Trunk Lid Handle
|A2207500091||To Date: 30/06/2000|
|A2207500391||From Date: 30/06/2000 To Date: 01/09/2002|
|A2207500893||From Date: 30/09/2002 To Date: 04/11/2003|
|A2207501293||From Date: 04/11/2003|
For vehicles with option code 889 – KEYLESS-GO:
|A2207500291||To Date: 30/06/2000|
|A2207500491||From Date: 30/06/2000 To Date: 01/09/2002|
|A2207500993||From Date: 30/09/2002 To Date: 04/11/2003|
|A2207501393||From Date: 04/11/2003|
For vehicles with option code 881 – REMOTE TRUNK LOCKING:
|A2207501093||From Date: 30/09/2002 To Date: 04/11/2003|
|A2207501493||From Date: 04/11/2003|
|A2207501193||From Date: 30/09/2002 To Date: 04/11/2003|
|A2207501593||From Date: 04/11/2003|
Trunk is stuck closed and locked
This typically occurs when the locking mechanism is damaged. On mechanical locks, the system works by inserting a key into the trunk latch slot and turning the key to the right or left. This activates a series of tumblers like any other lock and a spring to open the latch. Sometimes the spring inside the locking mechanism is damaged while in other cases it is caused by a broken tumbler. On electric operated trunk latches, this can be caused by a faulty solenoid which will not open when the remote or button inside the vehicle is pressed.
In either case, a mechanic should be called to review and fix this issue as soon as possible. Having access to the trunk is often a luxury for car owners, but the trunk typically contains spare tires and other safety equipment that won’t be accessible in an emergency situation if the trunk latch is broken.
In most circumstances, the issues with the trunk latch are caused by electrical problems, as mechanical trunk locks were built extremely well in years past. If you notice that your trunk is having difficulty opening or closing, or remaining locked; contact a local ASE certified mechanic so they can replace the trunk latch or complete an inspection to verify what is wrong so they can repair it quickly and affordably for you.
There are multiple reasons why a trunk locking mechanism may fail, but the most common issues are caused by a bad trunk latch, or the trunk is not aligned properly.
Common issues relating to the trunk/boot lid functions are:
- Hissing sound on trunk opening or closure can occur due to a leak in either the:
- Retractable Trunk Lid Grip (RTG);
- Trunk latch control solenoid valve module;
- Cracked or broken pneumatic line where it enters the trunk.
- Broken or failed pneumatic actuators.
- Broken wires in pneumatic solenoid valves.
- Cracked or broken pneumatic lines.
- Leakage of water into the trunk because the power closing assist fails to pull the lid closed completely.
- Cannot open the trunk when the battery is dead.
Why do you need a car trunk lock repair?
In many ways, the need for a car trunk lock repair has similar elements to the need for a car door lock repair or replacement, and the trunk lock replacement cost is similar to the cost of repairing your car door locks as well. Much in the same vein, the reasons why you will need to a car trunk lock repair echo the reasons why you will need a car door lock repair. They are not exactly identical, but they feature some similarities. Here is why you will need a car trunk lock repair:
1. Damage To The Car Trunk Locking Mechanism
The main reason why you will need a car trunk lock repair is that there has been some form of damage done to the car trunk locking mechanism. This can occur in a variety of ways, and sometimes it might not be apparent until it is much too late and you are stuck in a somewhat precarious position.
Damage to the trunk lock shows itself when the key may not enter the lock cylinder in the right way, if the key does not turn in the cylinder, or if the locking cylinder does not engage in the way it should. A damaged cylinder is easy to spot, but also easy to overlook. This is because most modern cars rely on trunk lock actuators and this means drivers do not have to directly interact with their car trunk locks.
2. Broken Car Trunk Lock Actuator
The car trunk lock actuator is a common feature on every modern vehicle, and it also appears on some older car models. A trunk actuator is used in conjunction with the car door lock cylinder and it is used to engage the cylinder without the use of physical car keys.
Car trunk actuators are controlled by buttons housed within the vehicle, or those found on key fobs and car key remotes. The actuator itself is used to release the trunk latch lock, and this is an action that is usually executed by inserting your car key into the trunk lock itself.
2. Release buttons are not working properly
Another common signal that a problem with the trunk lock actuator exists is when you press the fob button or the inside trunk release and nothing happens. This might indicate a problem with the electronics running to the actuator such as a fuse or wire being shorted or an issue with the vehicle’s battery. Since there are many potential problems that can cause this issue, it’s best to contact a local mechanic so they can properly diagnose and fix the issue as soon as possible.
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