K.W.S TruckTech

K.W.S TruckTech We fix trucks. Everyone else guesses.

🚨 When the truck is miles from home and needs bench work, sometimes the bench goes to the truck.This Scania decided that...
02/06/2026

🚨 When the truck is miles from home and needs bench work, sometimes the bench goes to the truck.

This Scania decided that its COO module had had enough… right in the middle of a delivery. Not exactly ideal timing. Human beings have a remarkable talent for discovering electronic faults only when the vehicle is loaded and earning money.

With the truck stranded on site, we took the workshop to the customer. Dash stripped down, module removed, bench-powered, diagnosed and recovered on location.

The best part? Security at the gatehouse wasn’t entirely convinced that a breakdown specialist arriving in a BMW was a serious recovery plan.

A couple of hours later, the truck was back together, fault resolved, and back on the road completing its delivery.

Straight from the dinner table to a customer’s rescue. Just another day at KWS TruckTech.

📍 Mobile HGV Diagnostics
📍 ECU & Module Diagnostics
📍 Scania COO / EMS Support
📍 Electrical Fault Finding
📍 Yorkshire & Surrounding Areas

Meanwhile on a Sunday…One control unit on the bench for Mercedes Actros EBS4 diagnostics, another Scania COO8 waiting it...
31/05/2026

Meanwhile on a Sunday…

One control unit on the bench for Mercedes Actros EBS4 diagnostics, another Scania COO8 waiting its turn in the background.

Modern trucks are no longer just engines and air systems. Most faults now require understanding vehicle networks, software, control units and communication between modules.

Bench testing allows modules to be checked, diagnosed and programmed in a controlled environment before they go back into service.

Sometimes the fault is on the truck.
Sometimes the fault is in the module.
Sometimes the fault is hidden somewhere between the two.

🔧 Commercial Vehicle Diagnostics
🔧 ECU Testing & Programming
🔧 Electrical Fault Finding
🚚 Mobile Service Available

Sunday vibes.Some people are enjoying a lazy morning with a coffee.We’re sitting in a Scania with half the steering colu...
31/05/2026

Sunday vibes.

Some people are enjoying a lazy morning with a coffee.

We’re sitting in a Scania with half the steering column dismantled, chasing faults that only appear when they feel like it.

The glamorous world of commercial vehicle diagnostics.

No guesswork. No parts darts. Just finding the actual fault and getting trucks back to work.

📍 Doncaster
🚚 Mobile HGV diagnostics
🔧 Scania, DAF, Volvo, MAN, Mercedes & more

Not every repair starts on the truck.This Scania COO8 control unit is currently on the bench for testing, communication ...
31/05/2026

Not every repair starts on the truck.

This Scania COO8 control unit is currently on the bench for testing, communication checks and software work before it goes anywhere near a vehicle.

Bench testing allows us to verify power supplies, communication lines and module operation in a controlled environment, helping to identify faults without unnecessary parts replacement.

Whether it’s diagnostics, programming, flashing, cloning support or module recovery, working on the bench often saves time, money and downtime compared to trial-and-error fitting.

Dealer-level diagnostics, carried out independently.

📍 Doncaster
🚚 Mobile service available
🔧 Commercial vehicle diagnostics, programming and ADAS calibration

TruckRepair ECUProgramming TruckTech KWSTruckTech doncaster

Not every repair starts on the truck.This Scania COO8 control unit is currently on the bench for testing, communication ...
31/05/2026

Not every repair starts on the truck.

This Scania COO8 control unit is currently on the bench for testing, communication checks and software work before it goes anywhere near a vehicle.

Bench testing allows us to verify power supplies, communication lines and module operation in a controlled environment, helping to identify faults without unnecessary parts replacement.

Whether it’s diagnostics, programming, flashing, cloning support or module recovery, working on the bench often saves time, money and downtime compared to trial-and-error fitting.

Dealer-level diagnostics, carried out independently.

📍 Doncaster
🚚 Mobile service available
🔧 Commercial vehicle diagnostics, programming and ADAS calibration

Customer complaint:“Think it’s got a bit of a short circuit mate.”Opened the battery box on this 2016 Scania R450 and fo...
28/05/2026

Customer complaint:
“Think it’s got a bit of a short circuit mate.”

Opened the battery box on this 2016 Scania R450 and found one battery trying to recreate a small chemical explosion.

Cause turned out to be the starter motor internally shorting and arcing heavily under load.

No complicated fault finding.
No mystery CAN issues.
No ECU drama.

Just brutal current draw and two batteries getting absolutely abused.

Sometimes the simplest faults create the biggest mess.

When the neighbours find out you’ve got an aircon machine… 🙃❄️No, we don’t normally do cars.Yes, somehow we still ended ...
28/05/2026

When the neighbours find out you’ve got an aircon machine… 🙃❄️

No, we don’t normally do cars.
Yes, somehow we still ended up recharging the neighbour’s BMW on the driveway.

KWS TruckTech specialises in HGV diagnostics, truck electrical diagnostics, AdBlue faults, CAN network issues and mobile truck ADAS calibration across Yorkshire and surrounding areas.

But occasionally the local neighbourhood committee decides otherwise.

At least this one didn’t need a forced regen halfway through.

You know the day is going to be long when you’re greeted with: “previous repairs by other techs” 👀2011 MAN TGL arrived w...
27/05/2026

You know the day is going to be long when you’re greeted with: “previous repairs by other techs” 👀

2011 MAN TGL arrived with:

❌ Flashing N
❌ Gearbox ECU malfunction
❌ CAN communication faults everywhere
❌ Half the dashboard removed already
❌ More wiring than a small power station

Started with gearbox faults. Ended up chasing power feeds, hydraulic pressure and a loom that had clearly been “improved” by several generations of enthusiastic electricians.

Modern truck diagnostics isn’t just plugging in a computer. Half the job is figuring out what the truck fault is. The other half is figuring out what humans did to it beforehand.

Proper diagnostics first. Parts cannon later.

📍 KWS TruckTech
Mobile HGV Diagnostics & Electrical Fault Finding

TruckRepair MobileDiagnostics KWSTruckTech

Another DAF in with us for injector coding today.Should have been a quick in-and-out job, but the ECU had other ideas. M...
27/05/2026

Another DAF in with us for injector coding today.

Should have been a quick in-and-out job, but the ECU had other ideas. Midway through coding, power supply became unstable and the ECU started dropping out during the write process.

After tracking down the issue and restoring stable voltage, injector coding completed successfully and truck running as it should again.

Programming modern HGVs is no longer just “plug laptop in and press a button”. Stable power supply is absolutely critical during any coding or programming work.

One small voltage issue can create some very large headaches.

KWS TruckTech
Mobile HGV diagnostics, programming & electrical fault finding.

Address

Garage
Doncaster
FINNINGLEY

Opening Hours

Monday 7am - 9pm
Tuesday 7am - 9pm
Wednesday 7am - 9pm
Thursday 7am - 9pm
Friday 7am - 9pm
Saturday 9am - 3pm
Sunday 9am - 2pm

Telephone

+447383814033

Website

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