Skip the auto shop - Our mechanics make house calls

Q: Why did my car have to sit and idle in the shop for 2.5 hrs?

asked by on

I put my car in the shop (Mercedes-Benz delearship service) today and had the following work done: REPLACE TIRE PRESSURE MONITOR SENSOR. When I dropped the car off in the morning, the elapsed time clock read 0:30 (thirty minutes running time). As you know, this clock resets itself to zero after four hours of non-operation. When I picked the car up this afternoon, the elapsed time clock read 3:05 (three hours and 5 minutes). Why did my car have to sit and idle for 2.5 hours to replace this sensor?

Thanks...

Tom

My car has 124467 miles.
My car has an automatic transmission.

A: Hi there: To be completely honest, we can’...

Hi there:

To be completely honest, we can’t tell you the exact reason why this occurred at the Mercedes-Benz shop. In some cases, a technician will complete a diagnostic check which will require the engine to be running for a brief period of time. It’s also customary for a mechanic to test drive a vehicle before and after repairs have been made. The best way to know for certain is to contact the repair shop and ask them why they had to operate your vehicle for 2.5 hours.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Climate control module. Heater core

Faults in electronic or mechanical control components in the HVAC system have no effect on the heater core in the passenger cabin. The heater core itself is not a component that would looked at as a cause of engine overheating....

Q: Blue smoke after starting the car

Blue smoke usually indicates oil getting into the combustion process - not a good thing. If you had your oil changed the day before, check the oil level to make sure it wasn't over-filled. If you car is accumulating some...

Q: The AC repair person suggested that I replace the system entirely.

Hi there. Assuming, the diagnoses for the A/C system are not working in traffic, this is a faulty/weak A/C compressor. It needs to be determined whether the system is contaminated. An A/C compressor (only) replacement can be successful if no...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...