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Protect mode Kenwood KDC MP438U in dash reciever

I had to do some work behind the dash, so I disconnected the stereo, and now that I have re-installed it has went into "Protect" mode. How do I remove the Protect mode.

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Anytime there is a short circuit or your battery down low enough you will recieve this signal. If you press the little "reset button" using a small pin or screwdriver your unit should reboot without the "PROTECT" signal. If seeing this "PROTECT" sign is a result of jumping your car, this will fix it. If the signal persists, then there is still a short circuit and you need to check your connection with the battery. Most likely it is touching the chasis or some othere metal.

Posted on Mar 29, 2009

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SOURCE: Security Code for Protect mode

how do i unlock the protect mode on the kenwood kdc-mp239

Posted on Sep 24, 2008

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1 Answer

Kenwood kdc-152 protext mode


Disconnect the power, check your speaker wire connections behind the stereo and at the speakers. Reconnect the power and test.

Aug 19, 2012 | Kenwood KDC-MP2035 CD Player

1 Answer

Got in car this morning and radio was blinking protect


Hi.

Protect mode is a special condition that kicks in when an internal fault has been detected. In protect mode all the unit function are disabled to prevent the stereo getting more damage in consequence of the fault. The state is a forced standby condition that starts when a wrong voltage or a short is detected.

Try disconnecting the battery terminal, pulling the radio out of the dash and checking the wiring at the back of the stereo. Most of the time protect mode is triggered by a wiring contact. If possible check also speaker wiring. A contact in wiring to speakers will trigger protect.

Regards.

Ginko

Sep 14, 2011 | Kenwood KDC-MP235 CD Player

2 Answers

JVC KD-R610 is stuck in Protect mode


Try disconnecting your battery, reconnecting it, and resetting your stereo. If that doesn't work, the constant power (yellow wire) or ignition wire (red wire) may have come in contact with ground or isn't properly connected. Make sure everything is connected properly and try resetting your stereo. If it is still flashing "protect", the unit needs servicing Contact JVC Customer Care Center at: 800-252-5722.

Jul 22, 2010 | JVC AM FM CD DET FACE CAR STEREO

2 Answers

My KDC BT742U recently went into protect mode after I went over a small bump. I drive a 2001 F150 Supercrew that had the stock stereo in it before the new kenwood. No problems had ever occurred before...


What has happened, is the bump has caused a broken joint on the pcb I have seen this many times in my shop. You need to take the actual unit in for repair, I mean the "Bump" and the "Problem" are indeed connected, and this is exactly what happens.

Mar 24, 2010 | Kenwood KDC-BT742U

1 Answer

MY KENWOOD CAR CD PLAYER IS SAYING PROTECT??


Hi,

Kenwood head units show "protect" when there's a problem with the speaker outputs. This might mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back in normal mode the next time you turn it on.

If it's staying in "protect", then you'll definitely have to remove the stereo and do some troubleshooting to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:

Pull the Kenwood unit from the dash and disconnect all the speaker wires. Turn it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker. Turn it on again and see if it displays "protect".

If it works with a single speaker connected, keep re-connecting the others until you identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that location.

If it displays "protect" with a single speaker connected, then disconnect that one and try a different one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit, unless your friend managed to blow all your speakers at once.

Thanks,

Dec 09, 2009 | Kenwood KDC-319 CD Player

1 Answer

Im trying to find where i can gt a complete guide on how to install a car stereo from color coding the wires to installing a dash kit


  1. DISCONNECT THE NEGATIVE TERMINAL ON YOUR BATTERY!
  2. For an old stock stereo, you may have to remove the dash or certain parts of it to access the stereo. Do that by locating screws and bolts and taking them off. Make sure to keep them in a safe place.
  3. For an aftermarket stereo, insert DIN tools into each slot on the stereo behind the faceplate. Slide the whole stereo out.
  4. Disconnect the antenna wiring (The wire with the big metal tip)and the stereo head unit wiring (wire harness).
  5. Reconnect the antenna into your new stereo.
  6. Use **** connectors and wire crimps to connect the stock wire harness with a car specific one that is sold seperately. The color of the wires on each harnass should match up.
  7. Reconnect the negative terminal on your battery and see if it works.
  8. Slide the stereo back into the dash and remount the dash that you removed, including screws and bolts.
hope this will help you

Jun 05, 2009 | Kenwood KDC-MP208 Car CD/ MP3 Player

6 Answers

Security Code for Protect mode


Turn on the car so the radio is flashing "Protect." Look on the front / removable face of the stereo. On it you will find a small round hole - that's a reset button. Find a small paper clip, unfold the clip and stick it gently into the hole. The "Protect" will stop flashing, and Kenwood will be displayed. Unfortunately all your settings/presets will be gone, but at least the stereo is working again!

Apr 30, 2008 | Kenwood KDC-W3534A CD Player

1 Answer

Flashing PROTECT


This is often caused by a problem with the speakers or speaker wiring. A speaker wire that's pinched behind the head unit will cause this problem if it's shorted to dash metal or the deck chassis. The first thing to do is remove the head unit and inspect all the speaker wiring for bare spots or pinched spots. If everything looks okay, disconnect all four speakers from the deck and switch it on. If it still shows "protect" then you have a defective head unit. If not, then turn it off, re-connect one of the speakers, and turn it on again. Continue until you find the speaker output that puts the deck into protect mode.

Jun 25, 2007 | Kenwood KDC-MP4032 CD Player

2 Answers

My stereo is flashing the work "PROTECT" across the front


In a Kenwood deck, "PROTECT" usually means that one of the speaker output wires is shorted. The first thing to do is pull the deck and inspect the wiring at the back, making sure there aren't any pinched or exposed wires. If a speaker wire is pinched against the deck chassis, or bare wire is touching dash metal, it can cause your problem. If you don't see anything obvious, disconnect all speaker wires from the deck, then turn it on. If it still flashes "protect", then you have a defect in the unit. If not, then re-connect the speakers one at a time until you find the one that causes it to go into Protect mode. Usually if you don't find a pinched or shorted wire behind the radio, the problem can be found at the speaker itself. This is especially common if you've installed after-market speakers; if a speaker terminal connection has come loose and is now touching the speaker basket or mounting surface, it will shut down the deck.

Jun 07, 2007 | Kenwood KDC-MP5032 CD Player

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