Door Handle Proximity Keyless Entry Problems - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 06-15-2012, 11:16 PM
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Exclamation Door Handle Proximity Keyless Entry Problems

I have a 2007 Camry Hybrid. I have had some strange things happening with my driver and front passenger locks. Currently, when I try to unlock my drivers side by grabbing the handle to activate the proximity door handle keyless entry, there is no response. I have to unlock the door with my key. Note that my front passenger lock works. However, a week ago, my drivers side proximity door handle unlock WORKED, but my passenger lock did not respond to any unlocking functions of the car. Over probably 6 months this has alternated a few times. Sometimes in the same day, one way will work, and the other won't, or some weird combination of things working and not working. Sometimes everything works. Another example that has happened is that when I've grabbed my drivers side proximity door handle, instead of doing nothing at all, the car beeps 3 times, but nothing unlocks and I have to manual unlock the door. Also note, that when either of the locks are not working when I try to unlock the door, they will not lock either when I exit the car, I have to manual lock them. It's as if the lock does not work at that time, but again, it may start working in a few days or the next time I use the car.

I've asked the dealership but they want to charge like $85 just to diagnose it. Any ideas?
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#2 Old 06-16-2012, 12:16 AM
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Just to rule out the easy stuff:

1. Do you have a second FOB you can try? What happens with the second FOB?
2. Depending on your answer to 1, change the battery in the FOB that's not working. Based on the symptoms you described, it does not sound 100% like it's the FOB battery, but it's easy and cheap enough to rule that out as a suspect.

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#3 Old 06-16-2012, 10:34 AM
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I have a recollection reading that the hand touch on the door lock may not work if the handles have car wax on them. Seems like a long shot, but you may want to try removing the wax with a solvent if they have been waxed.
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#4 Old 06-16-2012, 02:14 PM
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I had similar problems when our FOB batteries got low. Another possibility if you just bought the car. Could be your having this problem in a certain area, could be interference from a nearby cell tower. I had this happen with my '07 TCH. Once parked at a Denny's. The drivers door was stubbon to auto open. Was a tall cell tower just behind the restaurant. Another was at a convenience store. Same thing happened. The next day I drove by and looked and saw another cell tower about a half block from the store.

Last edited by WhiteSands; 06-18-2012 at 06:37 PM.
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#5 Old 06-17-2012, 09:27 PM
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Thank you for all your responses so far.

Quote:
Originally Posted by doznI4SE View Post
Just to rule out the easy stuff:

1. Do you have a second FOB you can try? What happens with the second FOB?
2. Depending on your answer to 1, change the battery in the FOB that's not working. Based on the symptoms you described, it does not sound 100% like it's the FOB battery, but it's easy and cheap enough to rule that out as a suspect.
1. With my current situation (driver's FOB & lock does not respond to anything & passenger lock works) I just tried the passenger FOB and it worked. It unlocked the passenger side, but again, the driver side did not respond.

2. I didn't even know they had separate batteries. Is this a do it yourself project? However, wouldn't the lock still respond to regular unlocking? It currently does not respond to any type of unlocking (FOB, remote, or inside door unlock button).

Quote:
Originally Posted by Ron AKA View Post
I have a recollection reading that the hand touch on the door lock may not work if the handles have car wax on them. Seems like a long shot, but you may want to try removing the wax with a solvent if they have been waxed.
Interesting. I have never had my car waxed. Thanks for the suggestion.

Quote:
Originally Posted by WhiteSands View Post
I was going to say, I had similar problems when our FOB batteries got low. Another possibility if you just bought the car. Could be your having this problem in a certain area, could be interference from a nearby cell tower.
Car is about 5 years old bought directly from the dealer. Batteries have never been replaced (didn't know they had separate batteries). About the cell tower, the problem has been consistent in various locations so I don't think this is the issue.
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#6 Old 06-17-2012, 10:45 PM
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Quote:
Originally Posted by perdooky View Post
Thank you for all your responses so far.

1. With my current situation (driver's FOB & lock does not respond to anything & passenger lock works) I just tried the passenger FOB and it worked. It unlocked the passenger side, but again, the driver side did not respond.

2. I didn't even know they had separate batteries. Is this a do it yourself project? However, wouldn't the lock still respond to regular unlocking? It currently does not respond to any type of unlocking (FOB, remote, or inside door unlock button).
........
I'm not sure what you mean by driver's FOB and passenger's FOB. I'm using the term FOB (possibly incorrectly) to mean car remote with lock/unlock buttons.

See the link in my signature to download a PDF copy of the Owner's Manual for your car - the manual should describe how to replace the FOB battery. Yes, you can easily do it yourself after buying a replacement battery at Wal-Mart, K-Mart, Target, auto parts places, etc.

I still say buy/install at least one new remote battery to completely rule out the battery as being the cause. Check your OM to see how the car notifies you if it detects the remote battery going low as the 2012s can do.

I agree with you based on your post that it's not the cell towers.

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#7 Old 06-18-2012, 06:04 PM
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Sorry, I thought FOB = the door handle with the proximity sensor. Now I realize you mean the key. I have replaced that battery before. I don't think that is the issue. I thought you meant the door handles have their own batteries. So it sounds like I still don't know what's going on.
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#8 Old 06-18-2012, 09:12 PM
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Quote:
Originally Posted by Ron AKA View Post
I have a recollection reading that the hand touch on the door lock may not work if the handles have car wax on them. Seems like a long shot, but you may want to try removing the wax with a solvent if they have been waxed.
I can lock/unlock my 2012 using the exterior door handle while holding a folded paper towel = 16 layers of paper towel. I was surprised. Worked while wearing a latex glove also.

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Last edited by doznI4SE; 06-18-2012 at 09:29 PM.
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#9 Old 06-18-2012, 11:05 PM
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you do not have to touch/grab handle for system to operate. simply place hand flat behind the handle - and it works fine. One finger doesn't, I tried. To make things more cute, if you stand close enough to a person that DOES NOT have key on self, and that person will placem say - her hand behind the handle - locks will unlock. So will trunk.

Anyhow.

That car is very sensitive to outside radiations, like from cell towers, radars, etc. It's even in manual. I'd be suspicious that you may have been hit by one of those beams. I know this from a DIY forum, as one of members had ghost garage door problem - door acting by itself. Then he realized that they built cell tower close by.

Mine is 07 too, manufactured in 06, and I had both batteries replaced. But mine showed "low battery" on display. I think, even basic models show warning. Replace batteries, sure, no big deal, but if problem persists - prolly have fobs and vehicle re-synchd by dealer. Better than getting stuck somewhere in sticks.




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