Diagnostics | Sompting, West Sussex
BMW Fault Finding
Warning light on, a Check Control message you don't recognise, or your BMW just not driving the way it should? Our BMW fault finding specialists at Cedar Garage German Car Specialists in Sompting, just outside Worthing, use BMW's own ISTA diagnostic software and manufacturer data to find the real cause, then explain it clearly and give you a quote before any repair work starts.
Dealer-Level Equipment
Why Choose Cedar Garage for BMW Fault Finding?
A modern BMW has dozens of control units talking to each other, so one fault can trigger several warnings at once. Accurate BMW fault finding means reading every module, checking live data and testing the sensors and wiring involved, rather than replacing parts on the strength of a code alone. Our technicians work on BMWs every day, from the 1 Series, 3 Series, 4 Series and 5 Series to the X1, X3, X5 and M models, so we know the faults these cars are prone to.
You get the same level of diagnostic equipment and software as the main dealer, with the personal service of an independent garage. We can collect your BMW and return it when the work is done, provide a hire car while it's with us, and we'll never spend more of your money without your approval.
BMW Warning Lights and Faults We Investigate
From an engine management light or limp mode to a traction control light that comes and goes, our BMW fault finding covers every system on your car. These are some of the most common problems we're asked to track down.
Brake, ABS & DSC warnings
ABS, DSC and traction control lights, brake warnings and faults that come and go.
Battery & electrical faults
Flat batteries, Start/Stop not working, battery registration and electrical faults.
Engine & drivetrain faults
Engine management light, drivetrain malfunction, limp mode and loss of power.
Tyre pressure warnings
Tyre pressure lights that won't reset or keep coming back, and faulty sensors.
Steering, suspension & parking brake
Steering and suspension warnings, electric parking brake faults and chassis messages.
Other BMW Services We Specialise In
Once we've found the fault, we can put it right and keep your BMW running at its best with our other specialist BMW services.
DVSA-Approved Testing
BMW MOT
An ABS, airbag or brake warning light can mean an MOT failure. Our DVSA-approved testers carry out BMW MOTs every week, and if a fault shows up we can find and fix it in the same visit.
Manufacturer Schedule
BMW Servicing
Many faults can be prevented with the right maintenance. We service BMWs in line with Condition Based Servicing, using the correct Longlife oil and quality parts, and update your digital service record.
Dealer-Level Fixes
BMW Repairs
When our fault finding pinpoints the problem, our technicians repair it to main dealer standard, from ABS sensors and parking brakes to timing chains, suspension and complex electrical faults.
Ready to book your BMW fault finding?
Book online or call our German Car Specialists on 01903 830303 and we'll get to the bottom of it.
Collection & Delivery
We can collect your BMW from home or work and bring it back once the fault has been found and fixed.
Hire Cars Available
Need to stay on the road? Ask about a hire car while we find and fix the fault on your BMW.
Wait in Comfort
Relax in our waiting area with free Wi-Fi and a hot drink while we carry out initial fault finding checks.
Case Studies
Our Latest BMW Repairs
Frequently Asked Questions
BMW Fault Finding FAQs
What does BMW fault finding involve?
We use BMW's own ISTA diagnostic software to read any fault codes, then test the parts involved to find the real cause. We'll explain what's wrong and give you a quote before any work goes ahead.
How much does BMW fault finding cost?
We start with an initial fault finding check at a fixed price, which we'll confirm when you book. If the fault needs more time to track down, we'll always ask you first.
Can't a cheap code reader do the same job?
Not really. A basic code reader only gives a general fault code, which often points to a symptom rather than the cause. We test the parts involved to find the actual problem, so you're not paying for guesswork.
Can I drive my BMW with the engine management light on?
If the light is steady and the car drives normally, you can usually drive gently to us, but get it checked soon. If it's flashing or the car has lost power, avoid driving it and give us a call.
Why does my BMW say 'Drivetrain malfunction' or go into limp mode?
This message means your BMW has spotted a fault and may have reduced power to protect itself. There are lots of possible causes, so book in for fault finding and we'll find the right fix.
Why does my BMW traction control or ABS light keep coming on?
This is a common BMW fault, often caused by a problem with a wheel speed sensor. Book in for fault finding and we'll find the cause and get it sorted.
Why has the Start/Stop stopped working on my BMW?
BMW Start/Stop switches itself off if the battery isn't healthy enough. A tired battery is the most common cause, so book in and we'll test it, and fit and register a new one if needed.
Do I need the main dealer for software updates or coding?
No. We use BMW's ISTA software for updates, coding and programming, so your BMW can be diagnosed, fixed and coded in one place.
