Q: My 05 Cadillac STS is not always starting and hesitates

asked by on October 12, 2017

My car will not start with the key fob & hesitates to start with the push start button inside the car. Please help !

My car has 200000 miles.
My car has an automatic transmission.

Car is not starting Inspection $94.99 - $114.99 Get a Quote

It could be that the battery in the key fob is weak. The key fob uses a watch battery and it lasts a long time, but won’t go on forever. The batteries are usually standard items that you can buy anywhere. Some of the key fobs can be tricky to open, but they are meant to be user-servicable. If that doesn’t solve your problem, you can contact YourMechanic. They can send a technician to your home or office to check out your Caddilac and let you know what is the solution.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Oil pan leaking
When an oil pan starts to leak the cause would be the oil pan gasket. This is a thin piece of metal/rubber that fits between the bottom of the engine block and the top of the oil pan. When all...
Car not accelerating
Hello, in your particular vehicle the RPMs and gas pedal are controlled electronically. The accelerator pedal position switch sends a signal to the ECU which sends a signal to the throttle position sensor. The throttle position sensor controls the opening...
Lights keep burning out
If the lights on your dash are going out along with other lights like your radio lights or the clock light, then you might be having a problem with the dimmer switch in your vehicle. The dimmer switch is what...
Clicking sound from tire
Hi! The sound you are describing is a common giveaway of a faulty CV axle. I suspect that the joint inside of the axle is binding up and is causing the noise. The joints on your particular vehicle may fail...
Check engine light on and recurring P0455
Hi there. The P0455 code (https://www.yourmechanic.com/article/p0455-obd-ii-trouble-code-system-gross-leak-evaporative-emission-by-john-nelson) that you are getting in the computer is a different issue than the transmission. Most of the time it is caused by a bad gas cap or a leak in the system. If the...
coolant leaking from injector 3
This could be from a couple of problems that may be unrelated. The first question is from where, specifically, the coolant is leaking (https://www.yourmechanic.com/services/coolant-is-leaking-inspection). Depending on where the leak is coming from and if there are any other indications of...
what size is my serpentine belt - 2003 Dodge Dakota
Hello. According to my resources, the serpentine belt size for your vehicle with the 3.9 liter engine is 97.3 inches long and 0.96 inches wide. The belt should also have seven grooves in it. The Dayco part number for this...
Judder/lag when accelerating
This could potentially be due to a faulty mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement). This is a component that regulates the air coming into the intake system as it is mixed with the fuel prior to being injected into the motor....
Fuel pump engages. Batery good, alternator good volts, jump start helps when wont start. Temp does not matter. Intermittent?
Hello. Thank you for writing in. There are several reasons your vehicle may only start when jump starting. The first and most common is a build up of resistance that is causing you to need a boost of voltage to...

Related articles

The Best Used Cars to Buy If You’re a Realtor or Real Estate Agent
If If you make your living as a realtor or real estate agent, you may have a number of considerations when it comes to purchasing a used vehicle. The most common considerations are budget, ability to transport people, and comfort....
Cadillac Certified Pre-Owned (CPO) Car Program
Drivers Drivers who are shopping around for the perfect used Cadillac may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on to...
How to Control a Car Light, Horn, or Central Locking System With an RF Remote Controller
A car's RF remote controller allows access and control of different components in a car. Common issues include non-working remote or a weak signal.