Digital Gate Lock Problems — Gatemaster, Borg, Codelocks and Code Locks Explained

The Main Brands — What You Are Likely to Have

The most common digital and code gate locks I come across in Twickenham, Isleworth, Richmond, Kew and the surrounding area are:

• Gatemaster — the most widely fitted brand on metal and iron gates in the UK. Often installed by the gate manufacturer before delivery, so many homeowners have one without having chosen it themselves. The Superlock, Superlock 2.0 and SelectPro are the most common models.
• Borg — a quality brand available through trade suppliers. The BL4401 is very common on wooden gates; the BL3100 series appears frequently on metal gates. Generally reliable but requires the correct procedure to recode.
• Codelocks — standalone keypad units found on both gates and doors. Used in domestic and commercial settings.
• ASEC — digital gate locks sold through trade channels, similar in operation to other push-button code locks.
• Smith & Locke — the Screwfix own-brand code lock, widely bought by homeowners and DIY fitters. A very common find on garden gates across the area.
• Digilock — keypad units found on a range of gate types.
• Unbranded locks — many fencing contractors fit locks with no brand name visible at all. These are typically sourced from wholesalers and vary widely in quality. Recoding procedures differ, but most follow one of a small number of standard methods.

While these brands differ in build quality and materials, they all work on broadly the same mechanical or electronic push-button principle. Th

e skills and knowledge needed to recode, diagnose and repair them are transferable across makes.

Common Problems with Digital Gate Locks

Lost or Forgotten Code

This is the most common reason people call me. A code set years ago has been forgotten, a previous owner or tenant set it and never passed it on, or a contractor changed it and didn’t leave the new code. In most cases the lock can be reset to a new code without needing the existing one, using the factory reset procedure for that model. The method varies by brand — some require a specific tool, others have a concealed reset button — but it is rarely necessary to replace the lock entirely.

Code Stopped Working

A code that worked yesterday but doesn’t today is a surprisingly common complaint. Causes include:

• The code has been accidentally changed — this happens more often than people realise, particularly with Gatemaster locks where the code change sequence can be triggered unintentionally
• Worn or dirty push buttons that are no longer registering correctly
• Battery failure on electronic models
• Water ingress affecting the mechanism

I can diagnose which of these is the cause and advise on the best course of action.

Lock Stiff or Not Latching

Gate locks take considerably more punishment than door locks. They are exposed to the weather year-round, subject to the expansion and contraction of the gate itself, and often hit harder than a door lock would be. Stiffness, difficulty latching, and gates that swing open on their own are all common issues I deal with. Often the fix is an adjustment to the lock position or the striker plate rather than a replacement.

Lock Jammed or Seized

A lock that will not open at all — even with the correct code — usually means either a mechanical failure inside the lock or a gate that has dropped or warped to the point where the bolt cannot travel freely. I can assess whether the lock itself has failed or whether the gate alignment is the underlying problem.

Need to Change the Code

Changing the code after a tenancy, after a contractor has had access, or simply as a matter of routine security is straightforward on most makes — but the procedure is different for each brand and model, and getting it wrong can lock the mechanism out entirely. If you are unsure, it is worth having a locksmith carry it out rather than risk locking yourself out of your own gate.

Can You Recode a Digital Gate Lock Without the Original Code?

In most cases, yes. Almost all digital gate locks have a factory reset function that allows the code to be cleared and a new one set, without needing to know the existing code. The method varies — some use a concealed reset button, some require a specific sequence, and some require a small tool to access the reset mechanism. I carry out this kind of reset regularly across all the main brands.

There are exceptions — a small number of older or lower-quality locks have no reset function, in which case replacement is the only option. I will always advise you honestly if that is the case before carrying out any work.

Should You Replace or Repair?

Not every gate lock problem needs a replacement. In my experience, the majority of call-outs for digital gate lock problems can be resolved by recoding, adjustment or a minor repair. Replacement makes sense when:

• The lock has mechanically failed and cannot be repaired economically
• The lock is very old and spare parts or reset procedures are no longer available
• The lock was poorly fitted in the first place and has never worked reliably
• You want to upgrade to a better quality or more secure model

I will give you an honest assessment and will not recommend replacement unless it is genuinely the right course of action.

Areas Covered

I cover digital gate lock work across Twickenham, Isleworth, Richmond, Kew, East Sheen, Teddington, Hampton, Brentford, Chiswick, Hounslow and the surrounding west London area.

Book a Gate Lock Visit

If you have a digital or code gate lock problem — lost code, lock not responding, stiff mechanism, or anything else — call Karen on 07795 280621 or use the contact form. I aim to respond promptly and can usually attend the same day or next day for non-emergency work.