Car Alarm & Radio Services

03/10/2026

🔧 Ford Focus Mk2 Instrument Cluster Cloning 🔧

Another Ford Focus Mk2 instrument cluster successfully cloned and ready to go. ✅

A nice straightforward job for C.A.R.S. — transferring the vehicle data from the original cluster to the replacement unit so it can be fitted back into the vehicle.

We carry out instrument cluster repairs, cloning and programming for a range of Ford vehicles.

📍 Fully mobile service across Wiltshire & Gloucestershire
🚗 Car Alarm & Radio Services – C.A.R.S.
📞 07970 252155
🌐 www.caralarmandradio.com⁠

Mobile Auto Electrical Specialists – established since 1990.

30/09/2026

20/09/2026

🔧 LOCAL MOBILE AUTO ELECTRICAL SPECIALISTS 🚗

Having electrical problems with your car?

C.A.R.S. comes to you!

We’re a family-run mobile auto electrical business, established since 1990, covering Wiltshire & Gloucestershire.

✅ Advanced diagnostics
✅ Module repairs
✅ Coding & programming
✅ Replacement car keys
✅ Dashcam installations
✅ Reversing cameras
✅ Auto electrical fault finding

📍 Fully mobile — we come to your door.

📞 Call Ursula: 07970 252155

Real People. Real Service. On Your Doorstep. ❤️

18/09/2026

First job of the day and no fix because of this

17/09/2026

🔧 FORD FIESTA ECU REPLACEMENT & PROGRAMMING

Another successful ECU swap completed by C.A.R.S.

This 2008 Ford Fiesta TDCi needed its engine ECU replacing. The replacement unit was an exact match to the original.

The process included:

✅ Original ECU configuration backed up
✅ Replacement ECU fitted
✅ Configuration transferred using FORScan
✅ PCM programmed
✅ PATS/immobiliser initialisation carried out
✅ Parameter reset completed
✅ Full system communication and operation checked

🚗 ECU replacement isn’t just plug-and-play — correct configuration, programming and immobiliser procedures are essential.

16/09/2026

🚗 £1,000 SPENT — AND THE CAR STILL HAD THE SAME FAULT!

This was a VW Golf on a 54 plate that would start perfectly, run for around a minute, and then cut out.

The garage read the fault codes and, rather than properly diagnosing the fault, appears to have followed the code towards the fuel metering valve on the high-pressure pump.

They couldn’t obtain the valve, so a complete high-pressure fuel pump was fitted — around £800.

❌ Same fault.

They then replaced the complete in-tank fuel system — another £200.

❌ Still exactly the same fault.

£1,000 spent and the original problem remained.

The car was then brought to us.

Rather than simply replacing more parts, we carried out proper electrical and system diagnostics and traced the fault to a small £20 module.

⏱️ Time to pinpoint and rectify the fault: approximately 10 minutes.

💷 £20 module instead of £1,000 worth of unnecessary parts.

This is exactly why reading fault codes is NOT the same as diagnosing a fault.

A fault code tells you what the vehicle’s control system has detected — it doesn’t automatically tell you which component needs replacing.

At C.A.R.S. – Car Alarm & Radio Services, we don’t just read codes and start changing parts.

We diagnose the fault.

📞 07970 252155
🌐 caralarmandradio.com

Mobile Auto Electrical Specialists — Established 1990

16/09/2026

🚗 VW Golf 1.6 FSI – Starts, Runs, Then Cuts Out

This Golf came to us with an intermittent running/no-start problem. The engine would start and run for a while, then cut out.

A diagnostic scan with VCDS revealed:

🔴 P0091 – Fuel Metering Valve (N290) – Short to Ground

The interesting part was that the vehicle had already had a new high-pressure fuel pump and low pressure pump at considerable expense to the customer but the problem remained.

Rather than simply replacing more parts, we monitored the fuel pressure while the engine was running.

At around 2,000 RPM, VCDS showed:

➡️ Fuel pressure specified: 5.79 bar
➡️ Fuel pressure actual: 1.17 bar

So we had a substantial pressure shortfall.

That meant we needed to look further into the fuel pressure regulation/control system, rather than assuming the pumps were the problem.

Further testing identified a faulty fuel pump regulator.
Brand new £37

🔧 Once the faulty regulator was replaced, the fuel pressure problem was resolved and the engine was able to continue running correctly.

What this shows

A fault code doesn’t always mean “replace the component named in the code.”

In this case, P0091 led us into the fuel metering/pressure control system, but it took live data, pressure comparison and systematic testing to identify the actual cause.

This is why proper automotive diagnostics is about testing and proving the fault, not just changing parts until the problem disappears.

📍 C.A.R.S. – Car Alarm & Radio Services
🔧 Mobile Auto Electrical Specialists
📍 Covering Wiltshire & Gloucestershire
🚐 We come to you