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How do I unlock a radio Sc 836 on Volvo 40V? Its indicating off

When the engine could not start I checked on the battery and found the terminals were loose and when I tightened the engine started and that when the radio stopped

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  • 179 Answers

Sounds like you activated the theft protection on the radio. Usually there is code in the owners manual that you can enter to reset the radio.

Posted on Nov 21, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: My 2005 jeep liberty (3.7)rear

My jeep wouldn't start, not even the horn or doors would lock and when I checked the back, it would make a noise but not open the rear window/door at all. A friend came over and tried for over half an hour to jump it but it wouldn't start still. Yesterday, my 16 yr old son, unknown to me, went to walmart and got another battery, but while the car runs now, a lot of the electrical stuff like inside lights and the radio no longer work now..there was a specific code on the battery, but he didn't ask anyone at the walmart service desk what kind of battery would work for the jeep, but called a friend, and so got one and put it in. My son says that a few of the fuses might be blown and that they don't cost that much to fix, but I am concerned that he bought the wrong damn battery for the jeep. It's an 05 jeep liberty, and I have extended coverage for it through mercury, but I have not been able to reach them since this happened yesterday on a saturday, and they are closed on weekends. The code for the battery that was in it, when I called and asked the walmart they gave me was 4609365AD, based on what one person saw on the battery, and the replacement battery is a walmart 'everlast', and the only numbers I see on that are 26-5N 630 525. Can someone tell me if he did get the right battery replacement based on that?

Posted on Sep 21, 2008

  • 4 Answers

SOURCE: VOLVO S40 DOESNT START OCCASIONALLY

sounds like you need a new battery, it probably isnt running enought cranking amps to start your car, try a different battery and it should start fine

Posted on Dec 22, 2008

bunnydawg
  • 5158 Answers

SOURCE: VOLVO S40 DOESNT START OCCASIONALLY

replace the starter relay located in the fuse panel in the engine compartment... i think on the volvo that would be near the firewall but look near the battery for the fuse panel

Posted on Mar 10, 2009

SOURCE: 1999 Honda Odessey Van Dies/stalls in traffic, restarts in a few

Honda is notorius for bad MAIN RELAYS the solder in them crack and can not be seen with the nacked eye. This is due to simple expansion & contraction the solder heats up & cools down. Try that.

Posted on Mar 22, 2009

  • 255 Answers

SOURCE: Car stalled because of loose fan belt, still wont run after tightened

ck belt tension, then ck alternator output voltage 13.25 at least

Posted on Apr 14, 2009

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Replaced battery volvo s60


start checking fusible link wire on secondary positive line from the battery terminal(or follow the positive to the terminal block on the firewall) and check/replace the secondary fusible link(usually about 6-8 inches long designed to burn in two if a short exists.)then go into fuses on the car and replace all that tests bad..good luck

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Reset check engine light


Check Engine Light can be reset by disconnecting the battery terminal and and putting it back again. Make sure you have the code for the radio before you disconnect the battery terminal as the radio can get locked. You can get the radio code from any dealer.
Another way to rest the check engine light is by using an error code checking meter. You will have to purchase one.
It is always better to first get it checked from a mechanic for the reason of the light to come on before you reset the light as it might be an indication of a serious engine issue.

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Hi, Can anyone help please, I have an old freelander 1 1999.. just replaced the battery and it has a philips R700 casetter player which no requires the unlock code. Can anyone help me please? Serial...


Hi,

The code for this radio is 4 3 9 3

Please leave a vote to show this free solution is correct.

As I have limited capacity to share free codes - for others needing a code for a car radio - I recommend the site at this link. Cheapest on the net and I use them often for other radios that I repair so I can vouch for them as being cheap, fast and accurate.

Hope it helps. Thanks for using FixYa.

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I have a 1992 volvo 940 and the radio lock up when i change the battery, and i bought it used, how can i get the unlock code


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The SC-816 is made by MITSUBISHI and the code cannot be calculated for free from anywhere on the Internet.

Try your Volvo Main Dealer....or a Decoding service who will plug it into a laptop to read/recode the memory chip (EEPROM)

Howver many Volvo Dealers offer the code for free provided you can quote the car VIN number and the radio serial number

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VOLVO S40 DOESNT START OCCASIONALLY


sounds like you need a new battery, it probably isnt running enought cranking amps to start your car, try a different battery and it should start fine

Dec 11, 2008 | 2000 Volvo S40

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Volvo radio unlock problem


Turn the ignition on 1st position. Engine off. Ensure headlights are off to avoid battery drain. Turn power to radio on, 'Off' appears. Leave like this for approx 2 hours. It should then ask you for the code again.

Aug 12, 2008 | 2000 Volvo S40

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