Scenario · Modern keyless
Keyless Car Won't Start?
Keyless car won't start? It is usually the car's 12V battery or the fob battery. We check both at your car and jump start or fit a new one, 24/7.
Push button doing nothing? We'll find out why.
Fob batteries stocked, main battery tested, no guesswork.
If your keyless car won't start, check one thing first: does the fob still lock and unlock the doors? If it does, the car's own 12V battery is the likely cause and a jump start or new battery will fix it. If the fob does nothing, its small coin battery is probably flat.
A push-button start that clicks or does nothing is either a flat 12V battery in the car (most common), a dying fob battery (very common) or a comfort-access module keeping the car awake and draining it (less common but recurring).
We check all three at your location so you're not swapping fob batteries when the real issue is the main 12V.
What we actually see on these jobs
- Fob won't unlock the car: usually the fob battery, not the car.
- Fob unlocks fine but push-button does nothing: the 12V main battery, almost always.
- Some models let you press the fob against the start button to bypass a dead fob battery, we know which do.
Key facts, Keyless-start no-crank
- Fob battery
- CR2032 or CR2450, we carry both
- 12V main battery
- Load-tested on the spot
- Comfort access draw
- Investigated with clamp meter if suspected
- Emergency start
- Most keyless cars have a documented fob-touch point on the button, we know them
Our four-step process
- 1
Fixed quote
By postcode and reg, before we move.
- 2
Load test
So we're not selling you a battery you don't need.
- 3
Correct spec
AGM, EFB or standard flooded, matched to your car, not what's cheapest.
- 4
Coded & clean
BMS registered, terminals greased, old unit recycled.
Who calls us for this
Owners of 2015-onwards cars whose keyless setup has silently died, and anyone who's never changed a fob battery.
Keyless-start no-crank, specific questions
Q.Is it the fob or the car battery?
If the car unlocks with the fob but won't start, it's the car's 12V. If the fob won't unlock or lock the car at all, it's usually the fob battery. We check both.
Q.Do you carry replacement fob batteries?
Yes, CR2032 and CR2450 are on every van.
Q.Can you emergency-start my keyless car?
On most models yes, either by pressing the fob against the marked start-button pad, or by jumpstarting the 12V first. We know the routine for each brand.
Q.The dash lights up but the car will not start. Is that still the battery?
It can be. Dash lights need far less power than the starter motor, so a weak battery can light the dash and still fail to turn the engine. A load test on site gives a clear answer.
Q.Can I jump start a keyless car myself?
Usually, yes, using the jump points under the bonnet. Our guide to jump starting a keyless car walks through it. If you would rather not, call and we will do it for you.
Related guides
General questions
Q.Do you code new batteries to the vehicle?
Yes, wherever the manufacturer requires it, BMW, Audi, VW, Mercedes, Ford, Vauxhall, Peugeot/Citroen. OBD-level coding included with every fit that needs it.
Q.Do you cover the whole West Midlands?
Yes, Birmingham, Wolverhampton, Dudley, Sandwell, Walsall, Solihull and everywhere between, plus surrounding Staffordshire and Worcestershire routinely.
Q.Can you invoice on account for businesses?
Yes, 30-day account terms available for fleets, lettings, dealers and repeat trade customers. Single monthly PDF invoice.
In short
Keyless faults are usually one of three things, we test all three on the driveway and fix the actual one.
Stranded with a flat battery?
Call now or send a WhatsApp, we'll confirm your quote and dispatch the nearest engineer.