Car Window Lock Box
The SL-591 KeyGuard Pro car window lock box is the perfect solution for anyone needing to store keys in a convenient place near their vehicle. Its large, full metal body makes it very secure while providing room for keys, key FOBs, or other small items. The internal dimensions for the car lock box when closed are: 4″ x 2-3/8″ x 1-1/8″ with a 4-3/8″ diagonal. A protective rubber cover is also included to keep the key pad safe from the elements.
Secure Your Keys & Valuables
Stop worrying about hiding your keys in a convenient location and simply store them in the KeyGuard. Its familiar, punch button key pad entry offers user friendly number or letter combinations. The combination is also easy to change with the provided tool.
- The KeyGuard car window lock box is constructed out of weather resistant, non-ferrous metal
- Internal dimensions: 4 x 2.37 x 1.12 inches – perfect for car keys, fobs, cash or cards
- Enter your combination using the phone style keypad which has user friendly alphanumeric push buttons
- No extra hardware needed – secure the KeyGuard to your vehicle by rolling up your car window
- Rubber cover protects the keypad from debris and foam backing prevents the lock box from scratching your car





















Peter MPH Pan –
Really enjoying this lock box for my car. It doesn’t fit a lot, maybe a small key ring or one large key with some small keys, but I only put one key in the at a time and it’s a great size for that. 4 stars instead of 5 because it may be a little small for some applications, and I got a faraday bag to use with it but it didn’t fit.
W. Butler –
Works like it’s suppose to, but far fewer combination patterns than an electronic lock (I’d do the math to find the exact number but I’m not that good). This is because the code digits can be entered in any order. It only matters that all digits in the code be pressed and no other digits.Secondly, this lockbox does not shield a key fob with keyless entry. The doors will unlock by anyone touching the door handle. You can wrap the key fob in aluminum foil to shield it, but that’s a bit of a crude workaround.Finally, I don’t recommend a window lockbox for any car unless you want to attract thieves. It’s easy enough to break the window, then smash/saw open the box to retrieve the key. If you want a secure lockbox for Turo, I’d recommend the Hitch Safe provided your car has a 2 in. hitch receiver.
Brandon H –
I bought this to use so I could self check-in my Turo guests. It works great. I worried that it may damage or scratch my window but it doesn’t. Super easy to use. The only thing I wish it had was an option to use the same number twice. As far as I know, you can only use combinations of each number once (like 0202 would not be possible).
Matthew w. Fann –
Nice little lockbox for rental cars are remote key security. Very easy to set the combination lock with the twist of the number pins, all done with the supplied key pin. Sturdy enough to last and I’m sure it’s decently weather proof.
Elizabeth Perez –
Amazing if you’re in the car rental business, easy for no contact with clients. Codes are easy to set up and change. No problems with this
James H. –
I’ve purchased around 10 of these, and they make remote hand off of keys super simple. No batteries, easy to reset codes, and straightforward to use.Would love to have a version where the number order matters, but it’s simple enough to change up the code that it’s not a big deal.
KP –
Has been serving it’s purpose since purchased!
Marie Rutledge –
Great lock