I change the battery on keyless entry remote now 9 w528i wont start

The Lock's lock from the door switches ? If they do it's not a fuse problem . Which of these does your vehicle have ?
Keyless Entry System Description and Operation (with Accessory 2 Way Remote)
Keyless Entry System Description and Operation (without Accessory 2 Way remote)

The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the body control module (BCM) to remotely activate certain vehicle features. Keyless entry will lock/unlock the doors/liftgate when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending a radio frequency to the remote control door lock receiver (RCDLR). The RCDLR interprets the signal and activates the requested function via a serial data message to the BCM. A low transmitter or vehicle battery or radio frequency (RF) interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system malfunction. High RF traffic areas may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following components:
• Door locks
• Liftgate lock
• Vehicle locator/Panic alarm
• Illuminated entry lamps
• Remote vehicle start
The keyless entry system has the following components:
• Keyless entry transmitters
• Keyless entry antenna
• 2 Way Advanced Remote Start RCDLR
• BCM

Your best bet , take it to a GM dealer .

• HOW TO - Change the battery and quick fix your car remote ...

  ? 9:32
  https://www.youtube.com/watch?v=KzCXGXCe0oc
  Sep 1, 2011 - Uploaded by tyreeztt
  Also if your remote isn't working with a new battery please check out this ... TO - Change the battery and quick fix your car remote / keyless entry ...

  Remote Key does not lock / unlock doors after battery change ...

  www.6speedonline.com/.../208274-remote-key-does-not-lock-unlock-do...
  Apr 17, 2010 - After I changed the battery, it would no longer lock / unlock the doors. ... I can start the call and all .. its just the door and trunk lock / unlock function that does not seem to work . ... now your fob is learned... the keyless entry goes into a "sleep" mode to preserve the batt.. if u do not use the ... Still don't work .

  how do i reprogram my lock remote to my car? i changed my ...

  www.cargurus.com > Questions > Hyundai > Tiburon
  
  CarGurusAug 17, 2009 - i change my battery an now my lock an un lock buttons dont work on my remote how o i reprogram it? ... I have a Hyundai 2003 Tiburon, and the followingworked for me, get ... However for a replacement keyless remote fob, you will have to go to ... And no, they don't do it for free (ranges from $30-$50 in my ...

  Top 5 Tips in Fixing a Keyless Remote ' eBay

  www.ebay.com > ... > Safety & Security > Keyless Entry Remote / Fob
  Key fobs that don't permit entry can be a major hassle for drivers, but fortunately, there... Drivers with a bit of basic electronics experience are often able to replace their ...After confirming that a remote is faulty, try replacing its battery. ... like "Jeep Wranglerkeyless remote," to find listings that will work with specific vehicles.

have you changed the battery in your remote?

Is this an issue with all 2008 HHR remotes??? Highly doubtful , probably the vehicles keyless entry system . Taking the vehicle to a qualified repair shop an having the keyless entry system checked for DTC'S - diagnostic trouble code's . Do you know what a DTC is ?
The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the body control module (BCM) to remotely activate certain vehicle features. Keyless entry will lock/unlock the doors, or release the rear compartment lid when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending a radio frequency to the remote control door lock receiver (RCDLR). The RCDLR interprets the signal and activates the requested function via a serial data message to the BCM. A low transmitter or vehicle battery or radio frequency (RF) interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system malfunction. High RF traffic areas may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following components:
• Door locks
• Liftgate lock
• Remote rear doors (Panel only)
• Vehicle locator/panic alarm
• Illuminated entry lamps
• Remote vehicle start
The keyless entry system has the following components:
• Keyless entry transmitters
• Keyless entry antenna
• 2 Way Advanced Remote Start RCDLR
• BCM

Guessing will not fix this .

my remote start ont work but door locks work 2007 buick

change battery in your remote.

REMOTE KEYLESS ENTRY BATTERY IS WEAK OR DEAD.YOU HAVE TO LET DEALERSHIP REPLACE KEYLESS ENTRY AND REPROGRAM IT TO UNLOCK OR LOCK DOORS.

If you can access battery, connect jumper battery for power.

I would change both batteries not just the one, it's best to change them in pairs.

my keyless entry does not work and i change my battery for both the remote is there another battery or fuse