Question about 2009 Lincoln MKS
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Posted on Jan 02, 2017
SOURCE: steering wheel controls
Replace the clock spring, or check all the cabling and plugs first. If you are inexperienced take it to an auto electrician, otherwise do it yourself but disconnect the negative battery terminal for 2 minutes prior to opening the steering wheel to check the plugs, as not doing so could cause the airbag to go off. In addition you can also take out the airbag fuse. Check radio control plugs and close it up again and reconnect everything in reverse order. If that doesn't fix it, then have the clock spring replaced professionally, its too much mucking around if you don't know what you're doing.
Posted on Dec 03, 2008
first of all if you live in a cold climate I never turn the radio on until the car warms up if you can remove the knob on the radio spray a light amount of WD 40 and then put the knob back on and turn it back and forth and if you have pop on your hand or water also dry your hands off before touching the radio the lights and the radio will last a lot longer also and also before leaving the car always remember to turn the radio off it will be alot easier on your battery as well
Posted on Jan 05, 2009
dear friend-the volume on the steering works from the back of the radio and the knob from the front,they work seperate but both can be used,so the knob on your radio is not working.
Posted on Jul 21, 2009
Check the fuses and relays. Generally if only 1 accessory doesn't work, the problem is with that particular accessory. When ther are several that don't work, check fuses and relays.
Posted on Apr 01, 2010
There are actually only 2 wires that control your radio from the steering wheel, although you actually have five separate functions. One of these wires is a ground. The other wire wire actually goes to the radio via the vehicle speed control/horn switch, then to the Central Timing Module (CTM). The CTM relays the switch commands to the radio via the CCD Bus.
Now, how the CTM figures out what you are commanding the radio to do is by measuring the resistance to ground through the switches. Each position of the two switches has a different resistor in it and when you push the switch one way or the other, the wire to the CTM gets grounded through the corresponding switch and its associated resistor.
The resisors are as follows:
VOLUME UP = 7.32K Ohms
VOLUME DOWN = 1.21K Ohms
SEEK DOWN = 2.05K Ohms
SEEK UP = 4.53K Ohms
PRESET = 10 Ohms
As you can tell from looking at the resistance values, If there is high resistance in the VOLUME UP or VOLUME DOWN control switch, the CTM could mistake this for a command from the SEEK UP or SEEK DOWN switches. They ALL ground the same wire. The only difference is how much resistance to ground they provide.
The fix would be to replace the switch (or switches).
It has been a while since I have replaced one of these switches, but the last time I replaced one, it came from the dealer with BOTH switches and the wiring between them.
Posted on Aug 13, 2011
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