Complete OBD Diagnostics
A complete OBD diagnostic goes through every control module in the car, not only the engine. A modern car has dozens, and the one holding the answer is often not the one with the warning light. That is why a whole-car scan costs little compared with chasing one symptom through the wrong system.
From AED 199Written quote after diagnosis, before work startsConvenience fee applicable · shown on your written quote
- 1 to 2 hours
- Can be done at your location
- Convenience fee applicable · shown on your written quote
- Diagnosis free with repair
Signs you need complete obd diagnostics
- You want an overall health check before a long drive or the holiday season
- Several unrelated problems, such as a lazy window, a slow gearbox and a flickering gauge
- The car was recently in an accident or had work done elsewhere
- A second-hand car with a patchy history that you plan to keep
- Faults that disappear before anyone can see them
What usually causes it
Fault stored in a quiet module
Comfort and safety modules such as door control, seat, tyre pressure and parking sensors record their own faults, with no light on the dash.
Weak voltage affecting many modules
An ageing battery or poor earth produces communication errors across the network, which can appear as dozens of unrelated codes.
Aftermarket equipment
Added alarms, cameras, trackers and audio can interfere with the network and register as faults.
Incomplete repairs
A part replaced without being coded or adapted to the car will still show a fault.
How we do complete obd diagnostics
- 1
Battery and charging check
Before any scan, we measure the battery and charging voltage, because low voltage corrupts results.
- 2
Module-by-module interrogation
We build a map of the modules installed on that vehicle and read each in turn, noting codes and software versions.
- 3
Sort what matters
Active faults are separated from historical ones, and ranked by safety and by cost of ignoring them.
- 4
Written summary
You receive the fault list in plain words, with the recommended order of repair and what we could not test.
By make and model
Mercedes-Benz and BMW
These cars carry many networked modules, and faults often sit in a comfort or gateway module, so a whole-car scan finds issues an engine-only reader never sees.
In Dubai, Sharjah and Ajman
A full scan is sensible before the summer, because heat finds weak points in batteries and cooling systems, and before a long drive to Oman or Abu Dhabi where help is further away. Companies running small fleets in Sharjah and Ajman also use it as a periodic check across vehicles. We come to your location for the scan itself; any repair is arranged afterwards. Fleet owners in Ajman and Sharjah often book several vehicles in one visit, and we keep a record per vehicle so changes can be compared from year to year.
Questions about complete obd diagnostics
What does a complete scan cost compared with a basic one?
It is quoted on the written quote after we see the car, since the number of modules varies. We never start repairs without your approval.
Will it find mechanical problems like worn brakes?
Only those that affect an electronic system. A physical inspection covers the rest, and we can combine them.
Do you give me a printout?
Yes, a clear list of faults found, in plain language rather than raw codes alone.
Is it worth doing on a newish car?
Yes, especially after an accident or any bodywork. Hidden faults are cheaper to fix early.
How often should a complete scan be done?
Once a year is sensible for most cars, and after any accident, major repair or battery failure. It is a cheap way to catch faults before they grow.
Can the scan be done while I wait?
At your location, yes: it usually takes an hour or two, and we explain the results before we leave. Any repair is booked separately once you have decided.
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Get a written quote
Tell us about your car. You get an itemised quote before any work starts, and you choose OEM, aftermarket or used parts.