The outside driver's keylock should mechanically unlock the drivers door even if the central lock system has failed. I have to go to the passenger side, unlock the passenger side door, reach over and pull up the lock knob on the driver's door, which activates the power door lock system, aĭiagnosis. I can't unlock the driver's door from the keylock. See the FAQ file on electrical faults in the door locking mechanisms.Įlectric Switch Mechanical Malfunction. Repairing the old one is tough: they have special heavy duty shrink wrap tubing.ĭriver's Door Won't Unlock.
Buy a new harness from Volvo ($200 or so at Borton Volvo) or obtain one, with all connectors, at a breakers yard. The harnesses feed through the door and hinge holes from the door into the cabin and terminate up near the side of the instrument panel, about ten inches from the hinge hole. You can replace these front harnesses easily by removing the door panel, the bottom of the A-pillar trim, and under-panel knee bolsters. Note that the door harnesses can flex near the hinges and result in broken wires which cause intermittent failures of door components. See the FAQ files on Body Glass and Electrical Circuits for more information. If, in spite of regular lubrication, your door lock freezes in the winter, use spray isopropyl alcohol in the little "door lock unfreezer" aerosols available at auto stores.Įlectric Window and Door Lock Problems. Spray it on then wipe off with a rag to remove both excess carrier and any dirt on the weatherstripping. Water can enter the dirt on this strip and freeze, holding the door quite securely shut. Use silicone spray on the rubber stripping between the frame and doors. Spray a little lube inside the lock and then work the key. Lube the lock cylinders and the inside mechanism using the spray tube on the aerosol can. I am not a fan of graphite lubes: I have had frozen locks on GM cars when I've used them and they are messy. CRC makes some superior clear synthetic lubes as does Valvoline. I use Mobil 1 spray lube (tough to find). Do NOT use WD-40 or the like to lube your locks. To keep them operating, lubricate twice yearly.
Lock cylinders and lock mechanisms collect dirt in their original grease which hardens over time. Use your choice of grease: simple chassis grease, synthetic, lithium, etc.ĭoor Lock Lubrication. With the door in various positions to ensure the grease is gettingĮverywhere it needs to. The extension tube on the grease gun allows you to apply grease Needle on the end, and was able to easily reach the elusive front door I attached my flexible tube extension on my grease gun, popped an injection Good time to lube the hinges and spring also. Just use a large screwdriver and raise it a quarter inch or so and problem seems to go away. If the spring is lifted slightly, it seems to cure the problem. I use lithium grease from a spray can that has a straw over the plastic tube that comes with the can. It is on the far side of the hinge, and is lubricated from the the bottom. It is the one you can not see that is causing the noise. There are two of those torsion springs on the lower hinge. Squirt some motor oil on top of the torsion spring in such a way that the oil runs toward the hole in the plate that houses the torsion spring. The minute amount of rotation by the spring in the hinge plate is what was causing the creaking and not the wheels. My 'CRACK-CRACK' noise turned out to be produced by the location where the torsion spring passes through the hinge plate that is attached to the body. I've squirted lithium grease all over everything, including inside the little grease fitting, but to no avail. It continues to make those horrible 'CRACK-CRACK' noises as it moves through the two opening detents. The driver's door on my wife's 940 has resisted all efforts at lubrication. Installation of Remote Power Door Lock Actuator in a 940 Installation of Remote Power Door Lock Actuator in a 740 VOC Home | FAQ Home Door problems on the Volvo 700, 900 and 90 carsĬargo Area Lamp and Tailgate Electrical Harness Accessĭoor Remote Lock/Unlock and Alarm Operation
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