Explain the vehicle, the key problem and what still works. Registration, make, model and year help us narrow it down quickly.
The symptoms and appropriate diagnostic checks help determine whether the issue is the key, the vehicle, or something else entirely.
Depending on the problem, this may involve battery checks, key replacement, programming or further vehicle diagnosis.
Where the fault can be resolved through KeyLogik's available services, the relevant functions are checked after the work is complete.
Explain the vehicle, the key problem and what still works. Registration, make, model and year help us narrow it down quickly.
The symptoms and appropriate diagnostic checks help determine whether the issue is the key, the vehicle, or something else entirely.
Depending on the problem, this may involve battery checks, key replacement, programming or further vehicle diagnosis.
Where the fault can be resolved through KeyLogik's available services, the relevant functions are checked after the work is complete.
Not every fault can be repaired or resolved on-site. KeyLogik will be honest about what is and isn't possible before any work begins.
Responsible for allowing the vehicle to recognise an authorised key for starting. This system communicates with a chip embedded in the key.
Responsible for sending the lock, unlock and other supported remote commands via radio frequency.
These functions can operate separately on many vehicles. A key may successfully start the engine while the remote locking function fails. Systems differ between vehicles — smart and keyless systems can be more integrated, so the fault pattern isn't always the same.
Select the symptom that best matches your situation.
Possible Causes
Suggested Next Step
Check the battery first. If a new battery doesn't restore the buttons, the fault is likely internal to the key or on the vehicle side. Contact us with your vehicle details so the correct checks can be identified.
These are common possibilities, not a confirmed diagnosis. The correct checks depend on the vehicle and key system.
Genuine KeyLogik jobs — every key below still started the vehicle but the remote buttons had failed. We supplied and programmed a replacement on-site.
Problem
The original key buttons were working intermittently, making remote central locking unreliable.
Work Carried Out
New spare remote key supplied, cut and programmed with fully functional remote central locking in Guildford, Surrey.
Problem
Rubber button pad worn away completely, exposing the circuit board. Micro switches broken off the board.
Work Carried Out
Replacement remote key supplied and programmed with fully working central locking.
Problem
Button pad failed and fallen off, leaving the circuit board exposed.
Work Carried Out
Replacement remote key supplied and programmed with fully working central locking.
Problem
Button pad failed; customer locking and unlocking manually with the blade.
Work Carried Out
Remote diagnosed and replacement key supplied with working central locking.
Problem
Remote badly worn; button icons no longer visible, central locking unreliable.
Work Carried Out
New flip-style replacement remote key supplied with working lock, unlock and boot-release buttons.
Problem
Rubber buttons degraded; key blade detached onto a split ring.
Work Carried Out
New flip-style replacement remote key supplied and programmed, restoring full central locking.
Problem
Flip key held together with electrical tape; remote buttons barely usable.
Work Carried Out
Clean replacement remote key supplied and programmed to the vehicle on-site.
Mahee Khan
A very nice and friendly guy helped me sort my keys and explained everything to me, and the price is very great.
A customer in Didcot, Oxfordshire had a 2010 Jeep Grand Cherokee with a key that still started the vehicle, but the remote lock and unlock buttons had stopped working.
We programmed a new remote key and tested all functions with the vehicle. The video shows the original key buttons not working, followed by the newly programmed key successfully locking, unlocking and starting the Jeep.
2010 Jeep Grand Cherokee – original remote buttons not working vs newly programmed replacement key.
Need a replacement yourself? See our replacement car keys or spare car keys service.
A weak battery is the first and simplest thing to check. It typically causes reduced range before the remote stops entirely. Always fit the correct battery type — some keys use CR2032, others CR2025 or a different cell entirely. Incorrect installation or a poor-quality battery can also cause unreliable operation.
Repeated use can damage the button mechanisms, rubber membranes or internal microswitches. Heavily used buttons wear faster, especially on a sole key used daily.
Moisture and corrosion can affect the remote circuit board, even when the key still starts the vehicle. Damage can worsen over time if left unchecked.
Some systems support resynchronisation procedures — typically a sequence of button presses or ignition cycles. However, these are vehicle-specific and not always the solution. A key that has lost sync may need reprogramming rather than a simple reset.
Cracked solder joints, broken components and damaged battery contacts can all cause remote failure. The circuit board is fragile — impact, moisture and age all take their toll. A key with board damage usually needs replacement rather than repair.
The problem isn't always the key. The receiver, antenna, vehicle battery, wiring or control modules can all prevent a working remote from communicating with the car.
Interference from other electronic devices or nearby signals can sometimes prevent a working remote from communicating reliably with the car. This is often intermittent and location-dependent.
A new battery is the logical first step, but it doesn't fix every remote fault. If the buttons still aren't responding after a battery change, one of these may be the reason:
A battery replacement does not automatically require key reprogramming. And if a new battery hasn't fixed the problem, the next step is diagnosis — not automatically buying another key.
The correct solution depends on the actual fault. Not every faulty remote needs a replacement key — and not every remote can be repaired.
Remote key problems and solutions vary between manufacturers. Battery type, resync procedures, key design and programming requirements all differ — and not every key from the same manufacturer uses the same system.
Remotes typically use CR2032 batteries. Some models require a resync sequence after battery replacement. Key designs range from separate fobs to flip keys across generations.
Shares key systems with the VW group, but keyless entry availability and key types vary significantly between model generations. Battery and resync procedures can differ from VW.
Comfort Access systems vary by model. Key designs and battery types differ by generation. Some BMW keys require specialist programming equipment.
Keyless-GO systems use key cards or smart keys. Battery types differ from most other manufacturers. Some models have integrated key designs requiring specialist programming.
Older Ford keys use various battery types. The Tibbe key blade is used on older models. Flip key designs and remote systems vary across generations.
Key designs vary widely across generations. Some models are known for button wear issues. Battery types and resync procedures differ by model year.
Keyless entry systems vary by model. Some models use smart keys with specific battery requirements and programming procedures.
Shares key systems with BMW. Comfort Access availability depends on original specification. Programming requirements vary by model generation.
Shares key systems with the VW group. Key types and battery requirements are similar to Volkswagen, but details vary by model and year.
Shares key systems with the VW group. Key types and battery requirements are similar to Volkswagen, but details vary by model and year.
These notes are general context, not model-specific guidance. Send your registration and vehicle details for accurate compatibility and procedure information.
Tell us your vehicle's make, model and year, and what's happening with the key. We'll help you work out the next step.
KeyLogik is a fully mobile auto locksmith — we come to you across Oxfordshire and surrounding counties.
