Q: On the Downhill Assist Control system, is it supposed to be noisy while in use? 2011 Kia Sorrento
Makes chattering sound. Surprised me on my first use of system.
My car has 65000 miles.
My car has an automatic transmission.
Recommended Services
| Car is making a noise Inspection | $94.99 - $114.99 | Get a Quote |
Hello - the Downhill Assist Control (DAC) uses engine compression (without ignition) to provide "braking" without heating up the brakes on a long descent. This makes a somewhat "unnatural" sound much like you describe from the exhaust. It is not harmful, but is perhaps a bit unsettling since it is not what you would be used. If you feel this noise is exceptionally loud, I recommend a noise inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, check for any problems with the DAC system, and give you an accurate assessment of damage and cost estimate for repairs.
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
What others are asking
Spewing oil leaving a puddle an shaking violently starts but sounds very bad like it's not getting oil an is rough sounding
Your description of the lack of oil tells me your engine is probably already badly damaged. The main problem is you drove it home with the problems you have described. The only way to save a motor from damage when...
Drive belt or pulley makes a screaming noise
Hi there, thanks for writing in. In most cases the screeching sound that is made upon start up is an indicator of a loose belt; either serpentine or drive belt. The belt maintains tension when the tensioner pulley (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-drive-belt-tensioner) is...
My back driver side park light does not work on my 2003 Cadillac Escalade
Hi there. Typically if it is just that one light that is acting up it is usually fairly simple. It can be as simple as a light bulb or it can be a problem with the circuit. I have also...
Will a bad steering rack or tie rod cause me to fail MOT?
Hello. Yes bad tie rods are a valid reason for a vehicle to fail MOT. The tie rods are part of the steering rack. The steering rack consist of two inner and two outer tie rods. Generally you will only...
My car won't start we've replaced the alternator and fuel pump but still won't start I just want it fixed what could it be?
Check to see if there are any stored diagnostic trouble codes. Be sure you have a fully charged battery that passes a load test (https://www.yourmechanic.com/services/battery-is-dead-inspection). Confirm that the engine immobilizer system (security system) is not activated thus preventing the car...
I have a 2002 nissan sentra 1.8 I'm trying to find the best place to purchase a front and rear catlyic converter
For the amount of the converters you will be best served purchasing the parts at local auto parts store so you have a place to go to get any warranty adjustments done. If you live in a state that regulates...
replacing shift solenoid and wiring harness camry
There are several shift solenoids in your vehicle's transmission so if there is a faulty one, such will have to first be determined with a diagnostic. The diagnostic to request is a check engine light diagnostic (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection). Note that the...
Is it really required to do maintenance like change oil and filters each 3k miles?
This is a very common question for many people as the service intervals tend to vary depending on the make of the vehicle, the specific type of service being recommended and the recommended return for service date as indicated by...
When I make a turn both ways I hear a knocking sound, I have already changed, cv shaft, lower control arms and ball joints.
It is possible that you can have some free play in one of your inner or outer tie rod ends. I would recommend having your inner and outer tie rod ends inspected by a qualified professional to determine if they...
Related articles
A Buyer’s Guide to the 2011 BMW X6 ActiveHybrid
This This “Sports Activity Vehicle” – a moniker bestowed by its maker – is one of those few cars that toes the line between SUV, hatchback sedan, and a just plain quirky car. Regardless of its true identity, however, the...
A Buyer’s Guide to the 2011 Mitsubishi Endeavor
The The 2011 Mitsubishi Endeavor is a crossover SUV that manages to provide decent comfort, power and performance into a single package. This also marked the final year of production for the SUV, as it was phased out due to...
The Best Used Cars to Buy If You Just Retired
Here’s Here’s a cruel, hard fact – car manufacturers no longer target seniors. Instead, they devote their time and energy to appealing to the 18-45 demographic. Still, some features make certain cars more suitable for older drivers. We have evaluated...
Browse other content
Maintenance
Estimates
Services