I used LASFIT LED emitters to replace the rather lame high-beams bulbs on my 2021 Ram 2500 Tradesman and have been very happy with them. Our 2008 Highlander’s lights were starting to get dim so I ordered a replacement set of emitters for it – “LASFIT H4 HB2 9003 60W 6000LM LED Bulbs Conversion Kit, 6000K Xenon White, Super Bright” to be specific.
Installation was pretty straight forward: Disconnect the wiring harness, remove the rubber dust boot on the rear of the light housing, unclip the bulb retainer, put the LED in, clip the retaining wire back in, clock it so the thin edge of the emitter was straight up and down, pull the wire pigtail from the light out the end of the dustboot, reinstall the boot, put silicone grease on the fitting and test. Done, right? Not quite.
Maybe a week or so after the install the light pattern was really screwy on low and no high-beam. In a Highlander, there is one “bulb” and is designed to emit both low beam and then high beam – to do this it has three wires – low beam, high beam and ground. In looking at the fuses in the engine compartment, one of the 15 amp headlight fuses blew. The H-LP LH fuse to be exact – that letter code corresponds with “Left-hand headlight (high beam)”.
I imagine their customer service center is in Asia, China maybe, but I had a nice email from Claire offering to send me a replacement set and she asked was that I send her a photo of the originals with their wires cut. I told her no problem – I just needed to wait for Michigan to warm up a bit as the temperature was in the teens and I would do it in the driveway.
Just a few days later the package arrived via first class mail, I installed the new LEDs and everything works great now.
Summary
I wanted to take a moment to share this. I always think it is worth recognizing a firm that stands behind their product – it was truly a zero hassle warranty exchange. I’m figuring that whatever bug was in the first LED isn’t in this new one as it is still working just fine.
Note, I have to buy all of my parts – nothing here was paid for by sponsors, etc. I do make a small amount if you click on an ad and buy something but that is it. You’re getting my real opinion on stuff.
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My wife and I ran into a first for us – she went to unlock our 2008 Toyota Highlander and it wouldn’t unlock with either remote. Yeah, I figured the battery was dead as we hadn’t run it for maybe two months due to the pandemic crap. We put it on storage and I really hadn’t thought about the battery … until the doors wouldn’t unlock.
How to get in the highlander with just the key fob?
Okay, I tried both key fobs and my wife was right – no sounds of any kind came from the Highlander. There was a key slot in the door so I figured Toyota must have had some kind of plan. We bought the car… truck… thing, used and never needed to get in manually until now.
I knew with other keyless cars that I had seen in the past there was a backup key that could flick out of the fob so I took a close look at the fob for the Highlander. There was a small rectangular button on the side with the image of a key on it.
I pushed on it and nothing happened. I then looked at the attachment where the key ring connected and noticed it looked really beefy. The button wasn’t the key, it was a rocker that unlocked the key to pull out.
Not Home Free – Expect to Lubricate the Lock
Okay, I saw one key slot in the driver’s door and thought I was home free. Nope. Wouldn’t turn. Not only that, there were no other key slots because I thought I would simply try another one.
Okay folks, piece of advice here from past mistakes – don’t crank on the key or you will break it and then you are completely out of luck and will need to pay a ton to get help. I busted a key in college trying to do just that and had to enter from the passenger side and slide across for almost a year before I could afford to have the door fixed.
So, if the key will not turn, spray lubricant in the slot. You will get a ton of conflicting advice on the Internet. What I have always used is Lock-Ease. Put the little red tube on the nozzle and hose down the inside of the key slot starting as far back as you can. Try and turn the key. If it still will not turn then spray it again. What I have found is that most of the time things turn fee with the first try and almost always by the third. I think the solvent that is carrying the lubricating graphite helps free up what is sticking and then the graphite takes it from there.
Okay, so the door was open and now I could open the hood. The battery read 0 volts – empty and introduced a new hurdle.
Why Smart Chargers Aren’t Always
So this takes us to the topic of smart chargers. The designers built in all kinds of safe guards including the need for a voltage to be present before they start. I really like my NOCO Genius chargers and was using one of the G26000 models. Here’s what I tried:
Just attached the charger – it would not switch to charging
Went to boost mode – it would sense the lack of voltage and switch off
I tried turning on the 5A 12 volt supply mode and that was just enough to make the security system chirp and reset over and over … crap.
So much for the easiest ones. That meant I needed to try and trick the charger. I brought my 96 Landcruiser over and connected good old jumper cables to start charging the “dead” battery and also hooked up a digital meter. It showed the alternator was cranking out 14.09 volts and as soon as I disconnected the positive cable from the Landcruiser, the meter showed the volts dropping down through 13 volts down into the 12s and so forth over the space of a few seconds.
Now this is the trick, for about 5-7 seconds the “dead” battery would appear to have enough juice for me to connect and start the NOCO. So, I staged stuff and had the gear ready to go. I charged the battery for a minute or two, disconnected the positive jumper cable from the Landcruiser, safely moved it out if the way and quickly attached the NOCO charger and it started charging. I jumped the dead battery just enough for it to show a charge to the NOCO that then turned on and did the rest. By the way, I am not faulting the NOCO. They are great chargers and I own three of them right now.
After about 12 hours the battery was fully charged and I then set the NOCO to repair mode to desulfinate the plates. The battery appears to be okay and we’ll see what it looks like come this fall when the temperatures start cooling off — the colder it is the harder it is for batteries to work and the marginal ones fail.
Lessons Learned
First, I now know where the spare key is. Second, I plan to hook up my smaller NOCO G7200 charger and run the cable under the power out of the hood so I can periodically top the battery off. Modern vehicles have a ton of electronics in them so I am not overly surprised it ran out of juice.
I hope this post helps you out!
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I’m going to leverage my inner Forrest Gump – used cars are like a box of chocolates. You never know what you are going to get. In this case, it was our 2008 Toyota Highlander. I decided to check the air filter just in case and noticed both that the vacuum lines had cracked and that someone had done a “creative” fix on a 4mm vacuum port that had snapped off.
If there’s one thing I have learned with modern computerized cars – don’t mess with their sensors or vacuum lines. You can get odd random codes thrown, lose performance, fuel efficiency, etc. So, I knew this needed to be fixed. The big problem – the vacuum fitting was cast into the airbox!! By the way, the air box is the car part that holds the air filter in this case – the air filter housing is another way of thinking of the part.
Let me start by telling you the expensive and time consuming way – buy a replacement air box. Yeah, this is going to cost you a bundle. A OEM Toyota air box will run you $275-400, used is about $100-185 and aftermarket tends to be under $60-90 and maybe iffy quality. Then there is the labor to do the actual swap – it’s going to either take your time or you are going to pay a mechanic to do it and the cost is going to go up fast. There is an easier and faster way.
My Recommended Approach
The magic fraction for today is 5/32″. Why? Because 5/32″ is almost exactly 4mm. If we get a small brass, aluminum or stainless barbed 5/32″ hose fitting with a threaded rear, we can easily fix this. I live in a rural area and this isn’t something I can easily walk into a hardware store and find so I did some searching for NPT to 5/32″ hose barb and found both 1/16″ NPT and metric fittings plus some were brass, aluminum and mystery metal. I discounted anything plastic/nylon because I wanted a stronger fitting.
Another reason I went with 1/16″ NPT is that it can fill a pretty big hole all by itself up to about 0.31″ given the taper plus I could then use a 1/16″ to 1/8″ bushing adapter if I needed to go larger.
After much digging around using Google and Amazon, I opted for an Aeromotive #15630 hose fitting made from 6061-T6 aluminum that I did order off Amazon [click here for the Amazon listing]. There was a no-name generic brass one but no spec so I didn’t go with it. By the way, searching for fittings like this really shows the limitations of general search engines to find parts. I spent a ton of time filtering through tons and tons of search results that turned up the wrong products. What a headache.
Installation
The first thing to point out is that the molded vacuum fitting is above the air cleaner so you can safely work on the box without removing it from the vehicle! Any debris from drilling or sanding will land on the filter and you can vacuum it out later. If you have a used car, peak inside and make sure the air cleaner is there and intact.
If you have just the old busted remains of the hose fitting to contend with then Dremel or sand the area flat. You want the installed barb to be able to sit flat against the wall of the box.
Next, pick a drill bit that is just the same size as the tapered bottom of the thread. NPT thread is tapered so the bottom has a smaller diameter than the top. If the air box was steel, we would use a letter “C” drill bit to make a 0.242″ hole. Notice how this is slightly smaller than 1/4″ but I am betting most people do not have lettered drill bit sets so you pick a close size and run with it. We do want the hole slightly smaller in order to thread it. Because this is plastic, we are going to push forward with the metal adapter fitting while turning and let the thread on the adapter cut the thread into the plastic. We aren’t going to bother tapping it first. That’s right – don’t buy a tap to do this uness you are a tool junky and perfectionist, which is fine if you are – I get accused of that a lot.
I’d recommend you start with a bit smaller than 1/4″ where the bit is slightly smaller than the bottom of the adapter, drill the hole and see if you can press it in. If not, go to a bigger bit. If you mess up and have a slightly too big hole, all is not lost – read the “Well crap” section below 🙂
Let’s say that everything goes great and you can screw the fitting into the plastic – Once threaded in, it’s done. Just screw it in and quit. Don’t put too much torque or you can strip it. That works just fine unless the previous guy bubba’d it, which takes us to the next part of the story.
Well crap….
In my case, I had a box of chocolates moment. The previous owner or a mechanic had drilled the hole out and installed some small metal bushing that was hidden due to the white silicone on it. I have no idea what it was from. Once I discovered and removed it, the hole in the air box turned out to be just a tad bigger than the entire 1/16″ tapered thread. Argh… not what I wanted to deal with.
Okay, I wanted to get this job and had three options, go to the hardware store and try and find a 1/16 to 1/8″ bushing, install a 1/16″ NP threaded nut on the back to hold it in position, which I also did not have, or glue the hell out of it and call it even.
First, I scuffed the surface around the hole with 100 grit sand paper so the glue could get a better grab on the surface. The second thing I did was to spray brake cleaner on the area to remove any trace oils that might prevent a good bond.
I was wearing nitrile gloves and also sprayed brake cleaner on the fitting to make sure it was clean. Gloves both keep your hands clean and also prevent you from getting oils from your skin on the parts — assuming the gloves are clean of course. Having a clean surface makes a HUGE difference in terms of how well any glue is going to stick.
Next, I applied a bead around the top of the NPT thread of the fitting and pushed it into the hole. Since I was wearing nitrile gloves, I just took a finger and smoothed the glue out a bit and let it cure for about an hour or so. You want it cured enough to hold the adapter in place – you don’t need it fully cured yet. With warmer weather it will cure faster and in cold weather it my take a long time and need a hot light or something to warm it up above 70F to get things done. Depending on what I am working on, I try to get somewhere between 60-110F. The warmer it is, the faster it will cure but don’t burn it or melt the plastic either!
I then put a second layer of black gasket maker on and fanned it out to get a good grip and to securely hold the fitting. I then let this all cure overnight. I’ve learned long ago not to rush faster than what the adhesive’s manufacturer recommends or you are liable to ruin an otherwise good job.
So, once it was fully cured I then needed to change the cracked vacuum lines which are what I noticed in the first place.
4mm Vacuum Lines
What got me started on all this in the first place was noticing that two 4mm vacuum lines were very cracked where they slid onto their respective hose barbs. This happens as rubber ages and gets brittle so finding them wasn’t surprising.
Fixing this is easy. You just need either real 4mm vacuum hose or 5/32 vacuum hose. You can either go with one formulated from rubber or more expensive silicone. The advantage to the latter is that it ought to last longer.
Going this route saved us a ton hundreds of dollars and has held up just fine. I did this repair last fall and have not had a single problem. Yeah, the glue does make it a big of a bubba fix but it is revsersible and the fitting isn’t going to fall out. The black gasket maker has held the little barb in just fine and the hose is very supple and shows no wear at all. I hope this helps you out as well.
2/12/24 Update: My repair is still just fine. A reader pinged me that none of the Amazon links worked so I went through and updated them.
7/28/2023 Update: Everything is holding up just fine and we’ve put quite a few miles on the car since this was written in March of 2020.
4/9/2021 Update: Still holding just fine. Not one problem to report.
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Okay, while researching what to do with my 2008 Toyota Highlander’s flaky alarm, I ran across some good videos you can watch on how to diagnose the switch and even how to replace the microswitch. As for me, I wrote up how I bypassed the sensor by creating a loopback plug from the old sensor’s wire. My approach still allows the rest of the alarm system to work just fine and can be done in less than an hour with little to no cost. With that said, let’s take a look at these really well done videos that helped me think out my approach – especially the first one on diagnosing the switch.
Diagnosing the Switch
The following is the best video I found on diagnosing the problem and he even disassembles the latch to show you what is going on in detail – it’s very well done. This video helped me figure out my approach and kudos to Ozzstar for making it:
If You Want To Replace the Microswitch
This next video is really well done and is specific to the 2008 Highlander. He ordered the same Panasonic automotive grade micro switch that Toyota used:
We recently became the new owners of a 2008 Toyota Highlander. It was in great shape and I thought we got a pretty good deal on it. The previous owner disclosed to us that the hood alarm switch was flaky and the car alarm would go off randomly.
After we bought the Highlander and returned home I did some research that night. There is in integral microswitch in the hood latch assembly that detects if the hood is open or closed. The alarm system will not arm if it detects that the hood is open and it will sound an alarm if someone tries to open the hood. Uhm… ok. My first thought was “you can only open it from the inside lever that is protected by the door alarms so why have this one?”
Unfortunately, or fortunately depending on your perspective, the switch is a known problem. It’s also one of the rare times where I will say Toyota did a bad design. Putting a basic microswitch in the front of a car where it will get wet all the time and corrode, not to mention the impacts and grease/oil from the latch itself, is not really that good of an idea — at least not to me.
After reading and watching videos, it seemed like there were three options:
Replace the whole hood latch assembly that includes the sensor. Third party, these latch assemblies were about $56 on Amazon and $50-60 on eBay. Original Toyota would be higher, of course. Pro: It is pretty easy to remove the assembly and install this one. Con: It’s a relatively expensive and will fail sooner or later unless someone fixed the switch design and sealed it better.
Replace just the microswitch. You can get the unit real cheap from Digikey and other suppliers plus there are Youtube videos that show you what to do. The previous owner did this and it worked for about two years he said. Pro: Real cheap (under $10 including shipping). Cons: Takes time and will not last without figuring out some better way to seal the original design.
Simply bypass the switch. As mentioned earlier – you can’t open the hood from the outside so what are the odds that someone will successfully break into the car and then open the hood without setting off the alarm? The risk is real low – low enough for me to go with this option. Pro: Easiest of all and is a permanent solution. Con: The hood alarm sensor will no longer work. This is the one I went with.
I’d like to point out that just unplugging the sensor is not an option. Doing that will make the computer think the hood is open and the car alarm will not arm at all. This means you must pick one of the three options listed above. I opted for the last one – I bypassed the sensor by creating a loopback plug – a fancy term meaning I joined the input and output wires together thus making it look like the switch was always closed so the computer would think the hood was closed regardless of whether it was or not.
What I want to do next is walk you through what I did. If you are not comfortable with basic wiring, I’d recommend against your trying this just to be up front. Always ask yourself if you can reverse what you are about to do or can you recover if something goes wrong – if the answer is “no”, then don’t do it. For example, don’t cut wires off right next to a fitting – leave yourself some pigtails in case you need to reconnect them.
One last comment – these directions are just based on my 2008 Highlander. Different years and models may not be like this. Research your vehicle before doing anything like this.
Bypassing the Sensor
So, to bypass the sensor we just need to create a circuit that normally exists when the switch is closed. First, I needed to get a better look at the location of the wiring so the cover needed to come off.
I did not take as many photos as I should have so let me explain. With the plastic cover off and the middle anchor clip removed, I had plenty of access to the switch and wiring to see what to do. The wire assembly runs from the hood latch – and there is only one wire – do not pick the hood cable used to open the hood. The wire runs from a small switch in the latch assembly and then plugs into a connector shortly below it.
I inserted a small blade screw driver to release the plug from the socket. To be safe, make sure you confirm the wires that you plan to cut lead up to the sensor and are *not* the wires going to the harness / wiring loom.
Why care? Because if you cut the wires on the sensor side and connect them together, you can easily replace the hood latch assembly and go back to having a sensor if you want. However, if you cut the wiring loom, it’s gone. You can manually splice in but it simply is not an elegant approach.
Note I am saying wires and when you look at the plug it looks like just one black wire. What you are seeing is the insulation tube that is black. Inside are two thin green wires that run from the plug to the sensor switch.
Once I was certain which wire to cut, I reached in with some snips and cut the wire leaving a couple of inches to work with. DO NOT CUT THE WIRES FLUSH TO THE PLUG!! You need a short length of the wires to connect together to make the circuit loop back.
To make work easier, I took the short wire with the plug on it and worked at a bench where everything was handy, I stripped a bit off the end of each wire, twisted the bare wires together, soldered them, bent them over the small wire pigtail and then used heat shrink tubing and electrical tape to secure everything. Total overkill but I never wanted to bother with this again.
I installed the newly created loopback plug back into the socket. I then tested the system by turning the alarm on with the key fob, putting the key fob out of signal range in the garage and waited for the system arm. Once the alarm indicator light went solid on the dash, I simply reached in through the open window and tried to open the door from the inside and the alarm went off. Yeah, I had to run back to that fob to shut it off 🙂
If the system thought the hood was open, it would never have armed by the way. That’s why you can’t just unplug the switch. I then reinstalled the plastic cover by installing the clips and then pushing the middle piece down to lock it in place. By the way, remember that the right two clips are bigger than the others. The two 10mm screws went back in with a dab of non-seize on each just in case they ever need to come out again.
That was it – the alarm is happily armed and protecting the Highlander as I write this and not one single false alarm since. I hope this helps you out.
5/23/2020 Update: This has worked great for me. Not one single problem since.
If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@ro*********.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.