Below are posts a friend and I made on another site. I think the information will be useful, especially should you decided to leave your valuables in your car instead of in a cheap hotel room.
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An amigo posted about having his car being stolen. Another amigo has mentioned break-ins. A friend had his Ford Expedition stolen in Tijuana. And many others, no doubt, have their own tale of woe to tell.
During the course of my life I've had three cars stolen, all in the US: one near a military base and two near the Mexican border. I've also had two break-ins: one in TJ and one while parked in the US near the border.
Consequently I've learned a few things about protecting a car. Were it not for some of measures below I think the break-ins would have been thefts. It's now been years since I've had a car stolen and/or broken into; hopefully, somebody will benefit from what follows: lessons I've learned the hard way.
To Deter Car Theft
Install a Shifter Lock (Trabaplanca). Sadly, this device is only for cars with a shifter on the floor or a shifter in the console between bucket seats; it can't be installed on cars with column shifters (like I drive). A post is attached to the chaise of the car and a collar goes around the shifter locking the car into park (or first gear if the car has a standard transmission). It would take a cutting torch to get it off.
There is a shop that installs stereos, alarms, recharges air-conditioning, etc. located on Revolucion across from the Calimax at 10th and Revolucion that installs shifter locks (trabapalancas) for around $120.00. This is the best (aftermarket) anti-theft device I've ever seen.
Install Kill Switches. During my two break-ins the thieves disabled the alarm. It was the kill switches that stopped him from stealing the car.
I have two kill switches on my car: one in the trunk and the other connected to the power controls of driver's seat. I figure car thieves aren't likely to suspect a car has two kill switches and they're also unlikely to look for/find a well hidden kill switch in the trunk. (My theory worked during two break-ins when the thieves didn't steal my car.)
I prefer a kill switch in the cabin of the car that requires the driver to do something (like adjust the lumbar setting of the seat) to start the car because people get lazy and don't use a toggle switch. That's why the kill switch inside the cabin of my car is connected to the seat controls. I recommend against using a kill switch that "gives itself away" to outside observersโsomething like having to turn on the head lights to start the car.
The best kill switch I ever saw was connected to the cigarette lighter. You had to push in the cigarette lighter to start the carโit couldn't even be bypassed using a screwdriver to push in the socket. However, the shop that installed it closed and I haven't been able to find anybody else who installs this type of kill switch. It had the added advaneforum.xxxe that you could carry the cigarette light in your pocket as if it were another key. (I put a "No Smoking" sign about the cigarette lighter in the belief that it would stop a potential thief from "connecting the dots" if he observed a missing cigarette lighter.) If you install this type of kill switch I suggest you carry a spare cigarette lighter in your trunk as once when the lighter popped out it got lost rolling out the door and I couldn't start the car. (Should anybody find a place that installs this type of kill switch please let me know.)
Use Secure Parking Lots. Parking on the street is inviting trouble. My friend took his family for a mid-day walk through the Tijuana park blocks. Half an hour later his car (which had no theft deterrents other than a club) was gone. The moral of the story is use a paid lot with an attendant whenever possibleโeven in broad daylight when you're only going to be away from the car for a few minutes.
For those using the trolley and leaving their car in Park and Ride lots I advise being careful which lots you use. I'd avoid the lots close to San Ysidro. I've used the lots in Chula Vista on E Street and H Street without incidentโwhich doesn't mean something can't happen. I've also parked on Chula Vista city streets near E Street and walked a few blocks to the trolley hoping there would be less risk parking in a residential neighborhood than in a Park and Ride lot.
Install a Car Alarm With a Kill Switch That Locks the Car's Doors. Frankly, I don't think car alarms do much good in preventing somebody from stealing a car. Nobody pays attention to their honking and car thieves (or at least the ones who broke into my car) are able to defeat them. If you get a car alarm it's best to install one that is connected to a kill switch.
Nevertheless, I do recommend installing a car alarm. A car alarm should have a flashing light and automatically lock the car doors. That way you can't accidently leave your car unlocked. IMHO that's about the only real defense against theft and break-ins that a car alarm provides, that and the visual deterrence the flashing light provides.
When installing a car alarm, pay attention to the key fob. The plastic ones with a little wire key ring tend to break easily. (It's almost a when, not an if.) I suggest buying an alarm with a metal key fob. (The shop mentioned aboveโlike many others in TJโsell them.)
Use a Club. The person who tried to steal my car (but couldn't due to the kill switches) was able to remove the club from my steering wheel.. (Spray the lock with Freon, then hit it with a hammer and the club falls apart.) Like the flashing light of a car alarm, a Club does provide some visual deterrence. So I use one, but I've learned from sad experience it's not enough to stop experienced car thieves from stealing a car.
An amigo points out in the advice I quote below, a brake lock is much better than a Club. It's a real deterrent to car theft and is on a par with the trabapalanca (shifter lock) I mentioned above. (IMHO, however, the shifter lock (trabaplanaca) is easier to use.)
Don't Assume Thieves Won't Steal Old Cars. Just because a car is old it doesn't mean car thieves won't steal it. Old car are sometimes stolen for parts. Also the platinum in an old catalytic converter is just as valuable as the platinum in a new catalytic converterโand lots of cars are stolen just to get the catalytic converter.
To Deter Car Break-ins
Don't Leave Anything Visible in Your Car. Hide all your valuables in the trunk of the car. Or leave them home, take them with youโฆor do anything else that prevents visible valuables from attacking thieves. (As quoted below, a good amigo of mine advises tinting your windows and covering the windshield with a sunshade to block visual access to the car's interior.)
Disable the Trunk Release. During one my car's break-ins although the thief was not able (thanks to my kill switches) to steal my car, but he did steal what was in the trunk of the car. So I disabled the trunk release and the trunk now can only be opened using a (separate) key. Same with the glove box. After I did this the next time somebody broke into my car he didn't steal what was in the trunk and glove box.
Use Dual Keys. I changed the locks on my car so there are two keys to the car: an ignition key and a truck key. The ignition key opens the doors and starts the car, while the trunk key opens the trunk and glove box. Sometimes when using a paid lot you have to leave the keys with the parking attendant, sometimes people have their car washed/detailed by hand, sometimes people have a mechanic work on their car, etc. Having a separate key for the trunk and glove box protects your valuables when you have to give somebody the ignition key.
If you install a car alarm that automatically locks the doors don't forget to put the alarm in valet mode before giving somebody the ignition key. Mechanics, etc. all too often leave the key in the ignition. Carrying a spare key in your pocket is only prudent unless you take my advice below about using a detachable key ring.
On 10th between Revolucion and Madero is a locksmith that will rekey a car lock for 200 pesos. I had him rekey the trunk and glove box in accordance with my above thoughts.
Use a Detachable Key Ring. It defeats the purpose of having a separate key for the trunkโto protect it's contents from being stolen by mechanics, parking lot attendants, etc.โif you're going to give somebody the key to the trunk. So use a key ring that allows you to easily detach the ignition key from the rest of your keys and only give the mechanic, car lot attendant, etc. the key to the ignition.
I've learned by sad experience that you can tell a mechanic, parking lot attendant, etc. that your car alarm automatically locks the car doors and some of them will still leave the key in the ignition resulting in it being locked inside the car. I've also learned that I sometimes forget to put the car in valet mode (as sometimes I forget the key punch sequence). So I hide a spare key to the ignition inside the truck of my car. Since I only give a mechanic, parking lot attendant, etc. the ignition key and always keep the keys to the trunk, my house, etc. with me I can open the trunk and get the spare ignition key should the ignition key I gave the mechanic, parking lot attendant, etc. be locked inside the car because somebody forget my warning that my car alarm automatically locks the doors.
Back in to Protect the Trunk's Contents. If you have something of value in the trunk--camera, laptop, etc.--when possible park the car so the trunk is against a wall, fence, etc. If somebody can't get behind your car you've made it harder for him to break into the trunk.
More Advice
Be On the Lookout For Muggers. When entering and exiting a car be on the lookout for muggers. Have your keys ready so you can quickly enter the car, especially when it's dark and/or the car is parked in a questionable area.
Store Your "Paperwork" in the Trunk. In this day of identity theft the less a person can learn about you the better. So put the registration, proof of insurance, etc. in a envelope and keep it in the trunk of your car so mechanics, car lot attendants, etc. can't steal your identity by looking at your "paperwork."
Register the Car to a Postal Annex Address. Sadly, mechanics, parking lot attendants, etc. have been known to drive a car to a person house and burglarize it. (If somebody says something they say you sent them to get something and they have your car to prove it! This is another reason to use a detachable key ring so another person never gets their hands on the keys to your trunk, house, etc.) Registering the car to a mail box, Postal Annex address, etc. is another step that can be taken to deter this type of theft.
Sadly, there are others ways than looking at your registration and proof of insurance that a person car learn who you are and/or where you live. Another protective step is to put the car in the name of a small business you create. (It's not expensive and many insurance companiesโI've learned through first hand experienceโwon't raise your rates if it's an "at home hobby business."
If you get a Postal Annex type of address it doesn't hurt to use it on your driver's license. It's a protection against being blackmailed. (A topic covered in more detail my โSafeguarding Your Identity" post.)
I admit some of this may be overkill. Then again, if you're a monger whose marriage, career, etc. could be hurt by being "outed" where's the harm in being a little paranoid?
An Amigoโs Advice
What follows was written by a close friend an expert in the field of security. His entire post covers a variety of topics such as Making a Safe TLN, Hotel Safety, Running Solo, What To Do If Confronted By Robbers, etc. I'm going to append his advice regarding Keeping a Car Safe:
1. Tint your windows. Tint all your glass limo tint. I know some of you will worry about cops citing you stateside but the chances of you getting cited and ripped off by ratones is pretty much the same so you might as well tint 'em. Besides, it's a fix it ticket and you can peel the shit off and get the ticket signed off.
Burt's Note: New laws have been passed in TJ since this was written that may make you want to use a dark tint, but not limo tint. For what it's worth, I have limo tint on my car and haven't had any trouble with cops on either side of the border.
2. Place a quality sunshade across the front windshield. The whole point of tinting and window shades is to deny immediate visual access. Most street ratones are opportunists who are like feral animals. They need to seek out prey, make a decision, hit it, and then escape. If you deny them visual access, they will not linger around trying to look through the tint and get caught prowling.
3. Buy a brake lock...not a steering wheel club. The brake lock is a mother fucker to defeat and if the crooks manage to smash your window to rip your car, they'll just look for someone else's
4. Car alarm with a kill switch. Make sure this a dash mounted LED light indicator to show the dipshits you have a car alarm activated. Again, it's an added deterrent.
5. Go to a hunting/shooting store and purchase a portable gun safe. It's about the size of a shoe box. It's solid steel and has holes in the bottom. You won't need keys, they go off of biometric key pads or chronologically programmed key pads--requiring no key or battery. Buy 1/8" thick steel cable with rubber armor which you can purchase at Home Depot. Have the Home Depot dude cinch off both ends with loops and double steel crimp. Make sure the loops can fit through each other. Open the box, thread the cable through the holes in the box. Pull the cable out and lock it to a secure area in your trunk or in the cab. You can keep money, house keys, I.D or what not in here. The whole set up will cost you under $80 and is almost impenenetrable.
6. For laptops and larger items, buy a Pac Safe. It's a portable soft safe with steel mesh in a duck cotton bag. you can put a lot of shit in here. It locks to any stable platform and cannot be opened unless you have a combo a key to the lock.
7. Remove the standard screws on your license plate holders and replace them with metric allen screws or odd shaped screws not readily accessible in the zona. This will keep dirty cops or ratones from stealing your license plate.
8. Try to use pay parking and don't be a cheapskate.
9. Always park in lighted areas.
10. Don't park your car next to high profile vehicles like vans and SUVs. They offer cover to the car thief to fuck with your car.
11. Never give your keys to a "plainclothes" valet driver. There are kids who will pull scams on you, acting as your butler. escort you out of your car and offer to shut the door for you. When they shut it, they do a half-ass door slam or throw a rag to thwart a complete closure. When you give them their tip and walk away, the kids open your car and ransack it. If the valet is a fake, he drives off with your car.
Summary
Finally, nothing is fool proof. Nothing that I know of will, for example, prevent car thieves from using a tow truck to steal your car. However, if you follow the above advice you'll significantly improve the odds your car won't be stolen or broken into.
Buena surete!