Modern motorcycles are equipped with safety features, some to protect the rider, others to protect the bike.
One of the security features pre-installed on more bikes every year is a steering lock, a key-and-barrel lock concept on the fork or steering head that prevents the handlebars and front wheel from moving.
A motorcycle steering lock can fail multiple ways, preventing it from locking. Below are the most common reasons your motorcycle steering lock won’t close.
How a Well-Functioning Motorcycle Steering Lock Works:
Steering locks are factory installed on many modern motorcycles as a stock item. Once employed, the mechanical portion of the barrel-style waves keep the handlebars in place to prevent theft. Its electrical sensor acts as a kill switch that stops the bike from starting while locked.
- Steering locks are generally separate from your ignition input and are located on the steering head, fork, or handlebars—some bikes use the same keyhole as the ignition.
- Most motorcycle steering locks require the bike’s front wheel to be angled to the left before the key inserts (more on a section below).
- When you insert your key into the barrel lock, you have to push the barrel in.
- Once depressed, the shaft cam inside the barrel lock pushes a small steel rod into the bolt receiver.
Once locked into the receiver, the bolt stops the steering head from moving, looking at the wheel in its extreme left position, so the bike is unrideable even if started.
Most modern bikes equip steering locks with electrical sensors wired to the ECU through your bike’s electrical harness.
Once the lock is engaged, the sensor interrupts the power flow through the bike’s electrical system, and the ECU prevents the motorcycle from starting until the steering lock is unlocked.
This modern, electrically enhanced version of the steering lock security feature deters bike theft. The downside is that should your motorcycle lock become stuck in the locked position; your bike won’t start until the lock has been released.
There are a few reasons your motorcycle’s fork lock gets stuck and won’t lock/unlock. The keys to solving your motorcycle lock problem lie in the details of why your motorcycle’s handlebar steering won’t close.
1. Key Won’t Release/Won’t Go in All the Way
The most common reason a motorcycle steering lock won’t lock is that the key won’t release from the lock barrel cylinder or the key won’t fit into position, as required to unlock the handlebars.
For your bike’s fork and handlebars to lock, the key must slide into position and release back out.
- If your motorcycle’s steering lock is electronically enhanced, the sensor won’t register that the steering lock is released until the key comes out.
- If your bike’s steering lock has an electrically powered actuator, the actuator won’t discharge until the sensor registers the critical release.
- Even if your electrical motorcycle steering lock doesn’t have actuator support, its sensor will interrupt the ECU’s signal until it thinks the key has left the cylinder.
- In other cases, the steering lock key is physically stuck inside the barrel.
- Furthermore, the key may not slide into the lock, as if something is preventing it.
The typical reason why this failure occurs is because of corrosion, dirt, and grime interfering with the key’s functioning once inside the barrel.
The grime can also stop the sensor from reading the key’s proper position.
Additionally, sometimes the barrel cylinder wears down and changes shape, so it no longer interacts with your key correctly.
If contamination is the issue, the cylinder can be cleaned free of rust and debris and lubricated with some WD40, and the key will slide in and release, registering with your sensor.
If the cylinder is worn from use, it may need to be replaced to properly release your steering lock key and lock the way it should.
2. Faulty Electronic Computer Unit
These days, motorcycles are governed by an Electronic Computer Unit, or ECU. ECUs were initially put on motorcycles to regulate electrical lights, gauge displays, and electronic fuel injection combustion systems.
- As motorcycles were stocked with more and more special features, the ECU’s job and software became more intricate.
- The ECU is the core regulator of all your motorcycle’s electrical functions.
- Your motorcycle’s ECU interacts with a network of sensors that monitor the various electrical units within your bike’s wiring harness.
- On modern motorcycles, the steering lock is often equipped with a “kill switch” ant-theft feature that kills the power to the engine until the steering lock is unlocked.
If your motorcycle’s ECU is corrupted, it may read the steering look as engaged when it isn’t, cutting power to your bike even though your key is inserted.
For ECU problems, you’ll have to take your bike to a mechanic specializing in your make of moto. They’ll have a diagnostics computer that hooks up to your ECU, reads if it’s been corrupted, and, if so, reflashes or updates your software.
If the steering lock sensor is the issue rather than the ECU, the diagnostics machine will detect it during this process, and you’ll have to replace it.
3. Failing Bolt Reciever
As explained in the first section, your motorcycle steering lock uses a barrel system, which includes the internal lock bolt and the bolt receiver or catch area, sometimes called a detent by some mechanics.
- One of the most common reasons a motorcycle steering lock won’t engage is the bolt receiver detent is jammed from moisture, corrosion, or debris.
- In some cases, riders can shake the bolt to recover loosely with their key after applying WD40.
- Other times, the detent is worn out from frequent use and needs to be replaced.
4. Motorcycle Handlebars Aren’t Turned Far Enough
Some motorcycle steering locks won’t let the critical turn into place until the handlebars are turned at the perfect sweet spot, where the detent is open to receive the bolt.
If the handlebars aren’t turned far enough to the side, the detent space won’t line up with the inner lock bolt, and your motorcycle steering lock won’t engage.
Additionally, if the handlebars are turned too far, the bolt receiver’s cog may roll past the point of being fully opened, and the bolt won’t fit into place.
- If your handlebar’s improper position is the reason your motorcycle handlebars won’t lock, you’ll know as your key won’t turn.
- Shake your handlebars back and forth until the key turns and your detent receiver locks the bolt into place.
5. Steering Lock Detent Cog Is Worn Out
Depending on the design of your bike’s steering lock, the blot receiver detent may integrate with a cog that ensures it locks the bolt into position.
Over time, the teeth on the cog wear down from catching and releasing over and over.
If your motorcycle steering lock’s internal bolt receiver cog is worn down or corroded, the bolt receiver will fail to hold the look bolt in place, and your motorcycle steering won’t lock.
6. Lock Actuator Wear and Tear
On some modern motorcycles, the steering lock includes an electrical actuator system of gears, linkage, and a cable that activates your steering lock, sometimes remotely, sometimes when the key is inserted.
A worn-out actuator can prevent your motorcycle steering from locking. In addition to vibration damage and moisture corrosion, actuators wear out from frequent use.
Suppose your motorcycle is advanced enough to include an electrical actuator integrated into your steering lock, and the actuator gets damaged. In that case, a replacement actuator is the only comprehensive solution to restore your bike’s powered handlebar lock.
Replacing the actuator is a complicated process different from bike to bike; many bikes with steering locks don’t include actuators.
We suggest leaving this particular repair job to a pro.
7. Motorcycle Handlebars Are Loose
Whether you recently changed your motorcycle bars or if your steering head bearings are loose from wear and tear or engine vibration, loose bars can interfere with the physical mechanics of some steering lock designs.
In some cases, loose motorcycle handle bars won’t have the tension needed for the detent to catch the lock bolt.
In other cases, the steering lock will engage at first, but the loose bars prevent the components from staying engaged.
Suppose loose handlebars are the reason your motorcycle steering lock won’t lock. In that case, you’ll likely notice front-end wobbles while riding, especially over rough patches of road, loose gravel, or at highway speeds.
If loose handlebars are why your motorcycle steering won’t lock, you’ve got a significant hazard on your hands that should be diagnosed immediately and repaired before riding.
Motorcycle handlebars can come loose for several reasons, some of which are fast and easy repairs, while others require the replacement of some hard-to-reach components.
Whether your bike’s handlebars came loose from issues with your motorcycle’s front fork, wheelset, front end suspension, worn steering head bearings, or missing hardware, if they’re loose enough, your motorcycle steering won’t lock, and your motorcycle is unsafe to ride.