Question about 2011 Buick LaCrosse

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2011 Buick lacrosse replaced battery car started then died after 15sec. No pwr checked all fuses-relays-cables-key stuck in column can't unlock to move cars. any ideas dealer no help.

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Since you have no power to the ignition switch( you can't get the key out). Look to the main fuses first. You can see them threw the top. If the solder joint isn't shiny, pull them first. Since it did start and run, it isn't the ignition switch. Wiring most likely in place. Fuse panel could be bad. I've replaced a lot of them. But not with out diagnostics.

Posted on Dec 15, 2016


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I replaced my battery this afternoon -30. It turned over and idles fine but now my key won't come out of the ignition, the car won't go out of park, no powered anything works. Help?

On newer vehicle's if you don't use another power supply when changing a battery modules can go night - night an not wake up ! Battery Disconnect or Replacement Problems Then your stuck having your vehicle towed to the dealer !

Dec 06, 2016 | 2011 Buick LaCrosse

1 Answer

2011 buick lacrosse door lock does not work on drivers door only.

There could be many problems in this situation. Here is a list of some things to check:

1.) Check the wire connection in the door jamb where the wires transfer from the vehicle to the door. Sometimes these connections get a little off and things start acting goofy because the door being open and closed all the time(nothings perfectly designed).

2.) Check the relays in the fuse box, I can't remember if on this model vehicle if they used separate relays for each door or just one for all of them, but the relay could be bad.

3.) Check the locking mechanism inside the door by taking off the door panel and using a multi-meter and a 9 volt battery. I've checked the locking mechanism inside doors with a 9 volt battery before to make sure the mechanism was able to do it's job without being hooked up to the vehicle's power source

Aug 26, 2016 | 2011 Buick LaCrosse

2 Answers

When I try to start my car I get a clicking sound but motor does not start. It is a 2011 Lacrosse

Try to charge the battery fully or get the battery load tested, clean all battery connections and try again. If this does not work the starter solenoid or starter may need to be replaced or repaired.

Feb 15, 2015 | 2011 Buick LaCrosse CXL

1 Answer

2007 buick lacrosse security system we have check everything batt good check all refuses if security system is armed will it not crank

By jumpering the starter relay you proved two things:
  1. There is sufficent charge in the battery.
  2. Starter circuit in key switch will not engergize the starter/solenoid or the ignition.
  3. Most obvious conclusion: defective key switch. Replace.

Nov 02, 2014 | 2007 Buick LaCrosse CXL Sedan

1 Answer

How do I remove the battey from a Buick LaCrosse?

follow this link as has video of the procedure which is simple but easier to send video than to type the procedure
Battery Replacement 2010 2013 Buick LaCrosse 2011 Buick LaCrosse CX 2...

May 02, 2014 | 2010 Buick LaCrosse CXS

1 Answer

Low beams gone on 2005buick lacross

look at the bulbs first.
there is the possibility that the headlamp switch is defective. Take the connector off and replace slowly to see if the connection is ok.
Put a jumper wire from battery to low beams. if this turns on the lights the switch is bad.
Then try the dimmer switch on steering column. Work back and forth a few times and watch for the lights to come on hard or flicker.
if the flicker replace switch assembly. again if nothing jumper the battery wire to low beams. If this turns the lights on replace switch.
Last the running lights module. jumper the wires again. replace if necessary.

Mar 15, 2013 | 2005 Buick LaCrosse

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My 2006 buick lacrosse wont start radio and lights work but its not saying nothing when i try to crank it

Hello! Do you hear a click when the key is turned?...If no click is heard either the ignition key, the Crank relay, the starter, or the battery are suspect...Having lights and radio does not mean the battery is capable of running a starter motor......Put a meter on the battery...should read 12.5 volts...Turn key...Does voltage drop to 8 or 9 volts? Bad battery...If all is well with battery and connections to it...Check the starter fuse # 33 in the under hood fuse/relay box...If the fuse is good that click you should hear is from the Crank Relay in that box...If all of the above is OK connect your meter to the Purple wire that is connected to the starter motor...When the key is turned 12 volts must be on that wire...If there is the starter motor is defective...So, #1...Do you hear a click when key is turned...That would point at a bad starter or weak battery...#2...If you do not hear a click bad fuse #33, bad Crank Relay, bad ignition switch...#3...If fuse is good Bad Crank Relay or Ignition switch; Crank Relay is a low cost item ($10)...Replace Relay...Stop there and send a comment as to results...Guru...saailer

May 06, 2012 | 2006 Buick LaCrosse

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Key Fobs act strange. Replaced batteries, now one

The Key Fobs for the Buick LaCrosse typically fail after 4 years. Both of mine started off failing to unlock and then completely failing. I purchased 2 new ones on EBAY for $40 and had the dealer program them for $10. To buy new ones at the dealer is very expensive, about $150 apiece.

Dec 30, 2009 | 2005 Buick LaCrosse

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