Car Diagnostics | Book a Car Diagnostic for your Lexus| RAC

£79.99

Average price for this repair for your Lexus in the last 30 days^

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car diagnostic?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running.

Plus, with RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage when you need a repair. We’ll come to you, at your home or work.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick for your Lexus

Our top pick

RAC Mobile Mechanic for your Lexus

At the RAC, we’ve got over 125 years’ experience in offering complete peace of mind to our members. We’re best known for our breakdown service. And now – our new RAC Mobile Mechanics are here to help make every day motoring easier. If you need a service or repair, they’ll come to you at your home or work.

Book a car diagnostic

Our mobile mechanics will spend up to 30 minutes checking your car for faults and talk you through any repairs you might need and give you a report for your records. There are various ways we can check for faults, which could include plugging in to check your car’s onboard engine management system.

OEM quality parts

We use original equipment manufacturer (OEM) standard parts, which means every new part will be the same standard and same quality as the original part it replaced.

Mechanics you can trust

Our mobile mechanics are friendly, honest, and backed by the RAC.

Close up of an RAC Mobile Mechanic running a vehicle diagnostic check

Book a repair

It’s easy to book a car repair online. We bring the garage to you with RAC Mobile Mechanics, or find a trusted local garage. Common repair jobs include:

Clutch Replacement

We diagnose and repair clutch issues – whether your clutch is heavy or slipping, or you’re having trouble changing gears.

Alternator repair

We check and correct alternator faults to keep your charging system running smoothly.

Oil change

Oil is vital to a healthy engine, so it’s important to change it regularly.

Brake pads & Discs

If your brakes are making noise or you’re noticing reduced stopping power, it’s likely time to replace your brake pads or discs.

And it’s not just car diagnostics that we do for your Lexus

Mobile mechanics bring the garage to you, saving you the hassle of getting your car to a garage. If you need a service or repair, they’ll come to you at your home or work.

Try one of our RAC Approved Garages

View all garages

D&A Autos

5.0/5

D&A Autos of Witney offer an independent personal service backed up by over 40 years experience. Although we are well known as Volvo specialists within the Oxford/Witney area, we also deal with all other makes of cars. Offering a full service from MOT/Repairs to selling carefully selected used cars. Our staff are hand picked and are also fully skilled. We feel we can offer you a service that is not only personal but highly skillful and professional. We have a good modern workshop with 4 bays fitted out by ourselves, and have daily deliveries from most franchises to cater for all makes. We also carry out diagnostic work and specialist work for other garages in the Witney/Oxford area and welcome trade enquiries.

154 Newland Industrial Estate, Witney, OX28 3JH

Car M.D. (Mossley) LTD

4.8/5

Car M.D. (Mossley) LTD in Mossley.

Car M.D (Mossley) Ltd, Mossley, OL59BG

RSC Ltd.

4.5/5

We have on site a fully equipped three ramp workshop. Our work shop philosophy is very old school, we will never carry out any work to your vehicle unless it is needed, always ask your permission to carry out any work up and above what has been agreed and do our utmost to give a fair and reasonable cost service at all times. As a result of this we have a loyal database of customers from Rickmansworth, Watford, Northwood, Hatch end, Bushy and surrounding area. We offer a wide variety of services at an extremely competitive rate especially when compared to the main dealers, these include: servicing, repairs, bodywork, tracking, tyres, air conditioning re gasses, clutches, brakes, exhausts, car audio and alarms.

Oxhey Drive, South Oxhey, Watford, WD197SE

Richardsons Colchester

4.8/5

Established in 1966 we are one of the South East's leading vehicle repair centres. We have a team of highly trained ATA staff and we are a BSI approved repair centre so you can ensure your vehicle is repaired correctly. We carry our vehicle servicing and repairs at very competitive prices but still follow the exact schedule recommended by the manufacturer and your warranty is NOT compromised regardless of the age of the vehicle. We also fit parking sensors, tyres, batteries, in fact we can undertake almost any of your car needs. We have alos recently been certified as a Which Trusted Trader which the company has been audited on our ability to provide customers with a honest service quality and cost standard. See for yourself by visiting www.grahamrichardsons.co.uk

Grange Way, Colchester, CO28HG

Bayley's vehicle locksmiths ltd

4.8/5

Bayleys Vehicle Locksmiths are an experienced, reliable and skilled local business based in Hove, East Sussex. We cover the whole of Sussex, Surrey and Kent and offer a 24 hour emergency response. VEHICLE LOCKSMITHS – VEHICLE REPAIR – MOT AND SERVICING WE OFFER COMPLETE KEY CUTTING AND CODING FOR MOST VEHICLES, INCLUDING HGVS & LGVS. HAVE YOU LOST YOUR HGV KEY OR NEED A SPARE ONE? WE COVER THE WHOLE OF SUSSEX, SURREY, AND KENT AND OFFER A 24-HOUR EMERGENCY RESPONSE. WE PROVIDE A FULL CODING SERVICE– ECU CODING – BSI UNITS AND CIM UNITS. ALL DONE AT OUR WORKSHOP OR WE CAN COME TO YOU. We offer complete Key cutting and coding for most vehicles, including HGVs & LGVs. Our team of experts can get your car fixed up in no time, so you can get back to your busy schedule. We also offer MOT and servicing services, so if your vehicle is due for its annual check-up, give us a call! Our expert technicians are only a phone call away when you need them!

Unit 1 D, Cambridge Grove, Hove, BN33ED

Frequently asked questions on car diagnostics

How much does it cost to diagnose a car problem?

The cost you pay can vary depending on the type of car and how complicated the diagnostic test. Check with your mechanic for a quote.

Is a car diagnostic test worth it?

Yes, a diagnostic test may save you a lot of money. It finds issues early before they become costly repairs. It can also keep your vehicle running efficiently and safely

Can I do a car diagnostic myself?

While you can buy a diagnostic tool, interpreting the results needs expertise. It’s best if you to have a professional mechanic perform the test.

How long does a car diagnostic test take?

Diagnostic tests take from 30 minutes to a few hours. This depends on what issues are being looked at.

What are common car diagnostic codes?

Common diagnostic trouble codes include:

P0300: Random/Multiple Cylinder Misfire Detected
P0420: Catalyst System Efficiency Below Threshold
P0171: System Too Lean (Bank 1)

These are general examples, so your car may have different codes. Always check with a mechanic so you get an accurate diagnosis.

Is a car diagnostic test necessary for a service?

Yes, they are. Regular diagnostics can help keep your car in good health. It makes sure that underlying issues are addressed quickly, so you can drive with peace of mind on the road.

Again, keep in mind that mechanics might have their own checklists. Chat with your mechanic to be sure that they address any specific issues you have.