Signs of a Bad or Failing AC Compressor Relay

Schedule Car AC Compressor Relay Replacement
Service Area

$91.43 - $169.17

Price range for all vehicles
Average rating from 13 customers who received a AC Compressor Relay Replacement.

Almost every single electrical system on a car is powered through some kind of switch or electrical relay, and the AC system and compressor are no exception. The AC compressor relay is responsible for supplying power to the AC compressor and clutch. Without this relay, the AC compressor will not have power and the AC system will not function.

The AC compressor relay is no different then other electrical relays - its electrical contacts will eventually wear or burn out, and the relay must be replaced. When the AC compressor relay has failed or is beginning to fail, it will begin to display symptoms that indicate it may be time for it to be replaced.

1. Inconsistent cooling

The AC compressor is powered by the relay. If it is not functioning properly, then the AC system will not be able to produce cold air correctly. When a relay is starting to fail, it may give weakened or intermittent power to the compressor, which will result in weakened or intermittent function of the AC. The AC may function fine in one instance, and then shut off, or deliver inconsistent performance in another. This may be a potential sign that the relay may be going out.

2. AC compressor is not turning on

One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all. In most cases, when the AC is turned on you will be able to hear the compressor switch on. It will usually produce a familiar clicking noise from the clutch being activated. If when you turn it on you do not hear the clutch being turned on, then perhaps it may not be getting power, due to a failed relay.

3. No cold air

Another symptom that the AC relay has potentially failed is that there will be no cold air at all from the AC. If the relay fails, the compressor will not operate and the AC system will be unable to produce any cold air at all. While there are several reasons as to why an AC may stop producing cold air, a failed relay can be one of the most common.

If you are experiencing issues with your AC system and suspect that your AC relay has either failed or is beginning to fail, we recommend having it diagnosed by a professional technician. If your AC relay is found to be faulty, they will be able to replace the AC relay if necessary.


Next Step

Schedule Car AC Compressor Relay Replacement

The most popular service booked by readers of this article is Car AC Compressor Relay Replacement. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Car AC Compressor Relay Replacement reviews

Excellent Rating


YourMechanic Car AC Compressor Relay Replacement Service

Average Rating

4.6/5

Number of Reviews

13

Rating Summary
11
1
0
0
1
11
1
0
0
1

Joe

42 years of experience
719 reviews
Joe
42 years of experience
Saturn SC2 - 75 Point Safety Inspection - Saint Petersburg, Florida
Joe was on time did the complete electrical inspection and found the issue . Nice to have found a professional
Audi A5 Quattro - Clunking or knocking noise from wheels - Saint Petersburg, Florida
Joe is the reason I stay with Your Mechanic! He is the best!

Ben

40 years of experience
1145 reviews
Ben
40 years of experience
Jeep Cherokee - AC Compressor Relay - Houston, Texas
Seasoned professional and very knowledgeable. Took time to answer my questions and ensured I understood. He’s a keeper!

Jose

9 years of experience
285 reviews
Jose
9 years of experience
Toyota Highlander - Car AC Compressor Relay Replacement - Saint Petersburg, Florida
Jose was on time, friendly but very professional, knew exactly what to do and was finished about 1.5 hrs sooner than what I was previously told it would take (saving a lot on labor). I"ll definitely contact the company for future needs & request Jose if it's an option. 

Mark

13 years of experience
71 reviews
Mark
13 years of experience
Mitsubishi Outlander - AC Compressor Relay - Indianapolis, Indiana
Mark was good. The only issue I had was he was going to advise that the issue was something other than the AC Compressor Relay and I would think you always want to eliminate the obvious vs. trying to charge for other things that do not warrant replacement.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE