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How to Identify Problems with Your Car’s Air Conditioning

There’s a lot to look forward to about driving your BMW in the summer. Nights are nearly fully drawn out and of course the arrival of warm weather. It’s enough to put a smile on anyone’s face.

The only thing that becomes a bit of a nuisance about the summer sunshine is the scorching temperature that can occur inside the car, particularly if you happen to have leather seats! Thankfully nothing beats the heat better than the trusted air-con.

However, when things go wrong with your car’s air-conditioning, it can be the pebble in the proverbial shoe. Cue sticking to hot leather seats, feeling as though you’re cooking alive and sweating profusely, they’re all ways to ruin the summer driving experience.

How do I tell if there’s a problem?

1. No air from vents

The most obvious sign that there’s an issue with the air conditioning is if there’s no air coming out of the vents when the A/C is switched on. This could indicate that there is a problem with the fan or possibly the pump. It could just be simple debris clogging it up, or it could mean that something has broken. Booking in with an auto technician should easily help identify and remedy the problem.

2. Unusual noises

If something sounds broken, there’s a good chance it usually is. Rather than leaving it to chance and hoping that it goes away, taking your car to a specialist is the best course of action to avoid any further damage or complete failure

3. Bad smells

If you’ve noticed that each time you switch the air-con on there is a smell that resembles 3-day-old socks emanating from the vents then there could be mould growing inside the unit. Condensation from operation can cause this over time, but if it’s formed up enough to cause a bad smell then it’s best to avoid using the A/C as mould can be a health hazard.

4. Water stain marks

If all is operating well with your air-conditioning unit then water drainage from beneath the car is a usual occurrence. Watermarks or stains inside your car however is not, and should be treated as something to get checked out, as there is a good chance that the drain has been blocked.

5. Low pressure or warm air

Both low pressure and warm air are common signs of a leak in the system. These can often be extremely hard to identify at source. It is possible to use a specialist dye to help find the location of the leak. However a technician will be more than happy to help if you prefer to do the work professionally.

If you do discover a fault with your car’s air-conditioning, then don’t hesitate to get in touch with Auto-Technik today and book in for a repair. One of our highly trained technicians will be more than happy to assist.

Servicing your car is one way of helping identify faults before they appear, visit our car servicing page for more information.


I was referred to Auto Technik about 2 years ago and have been bringing my 325i to them ever since. Trustworthiness and professionalism are of utmost importance when selecting someone to do business with – the servicing of my cars is no exception.

Wez and his team have always demonstrated trustworthiness, professionalism and knowledge of the issues pertaining to my 325i. Over the course of 2 years, I have completed a variety of service issues including brakes, tune-up, regular oil changes, thermostat, radiator and more. In each case, I found Wez and his team to successfully diagnose and service my repair needs in a timely and efficient manner.

Wish I could find a way to describe how great my car feels each time I drive away from Auto Technik! No matter why I brought my car in, I always leave feeling like the entire car was serviced.

I recently had my vehicle serviced at Auto Technik BMW and MINI Specialists in Leicester and found the overall experience rather brilliant. I have had numerous BMW’s and been to many ‘BMW and MINI Specialists’ across the midlands but I found these to be particularly professional and thorough.

The pricing was unbelievably competitive and they advised me on all the extra items my car needed after carrying out a FREE Diagnostic Check.

The one thing I found unique about them was they offered me a Collection & Delivery service. My BMW was collected from work at 09:30 and returned; Diagnosed, Serviced and Valeted before my lunch break!

In a nutshell the service was superb, the staff were courteous and professional and they offered a service that was “outside of the box” with both the service and the collection & delivery which would benefit anyone with a BMW that needed any work doing to it.

I would highly recommend them to all who need their BMW or MINI serviced.

Thanks again for the excellent job you did in repairing my BMW. It’s running better than ever.

I really appreciate the professional way in which you conduct your business. Your years of experience definitely show. I’ll be back!

I wanted to thank you for providing excellent service during my two recent visits with my 2000 BMW M-coupe. It was refreshing to be able to leave my car in “good hands” with an obviously well trained BMW mechanic and know that all the service will be handled in a very professional manner

george B

5.0 *****


Top garage

Great customer service, professional and helpful, recommend highly


5.0 *****


Five Star*****

Great experience at Autotechnik – Easy transaction with no pressure. Great communications and a real pleasure to buy from. Stefan made buying our new BMW X5 a pleasure and took the time to answer all our questions and queries about the vehicle. Good follow up to check all was OK and that we were satisfied with our purchase.


5.0 *****


Totally professional

Bought a vehicle which then developed a fault. Autotechnik couldn’t have been more helpful. Car was taken back courtesy car provided and regular updates on the work being carried out. The staff were always helpful and polite, and nothing was to much trouble. Especially professional during this difficult time faced by all.


5.0 *****


Top quality service

Autotechnik are, by some distance, the best independent dealer I have used. Buying my third Mini , it is evident that these guys are in a different league. They are clearly very knowledgeable about Mini and BMW, and the whole experience of the sales process was smooth, honest and professional. Details matter, and things like a follow-up phone call a few days after buying are a nice touch. I would highly recommend them.