How To Remote Start A 2017 Nissan Altima

The 2017 Nissan Altima, while not advertised as having remote start on every trim level, often provides the functionality through a combination of key fob features and, in some cases, integrated telematics systems. Let's delve into how you can potentially remote start your 2017 Altima, understanding the underlying technology and its limitations.

Unlocking Remote Start: The Key Fob Method

The most common way to remote start a 2017 Altima (if equipped) involves a sequence of button presses on the key fob. This system leverages the existing remote locking and unlocking capabilities of the car. Think of it like a secret handshake between you and your vehicle. The car is listening for a specific pattern of signals, and when it recognizes the pattern, it initiates the start-up sequence.

The "Lock-Lock-Hold" Sequence

Typically, the remote start sequence is: Lock - Lock - Hold the Start button. This means pressing the lock button twice in quick succession, followed by pressing and holding the dedicated start button (if your key fob has one) for a few seconds. The car should respond by flashing its lights and then starting the engine. If the Altima doesn't have a dedicated start button, holding the lock button on the second press might initiate the start.

Scenario: Imagine you're rushing out the door on a frosty winter morning. You press the lock button twice as you walk towards the car, then hold the start button (or the lock button again) as you get closer. By the time you reach the Altima, the engine is running, the heater is working its magic, and the ice is beginning to melt off the windshield. This makes your commute much more pleasant and safer. However, there's more happening under the hood than just a simple signal reception.

How It Works Mechanically: A Deeper Dive

The key fob transmits a radio frequency (RF) signal to the Body Control Module (BCM) located within the car. The BCM is essentially the brain of the Altima's electrical system. It manages everything from the door locks and lights to the security system and, in this case, the remote start functionality. When the BCM receives the correct sequence of signals, it validates the request based on pre-programmed security parameters. This validation is crucial to prevent unauthorized access and theft.

If the validation is successful, the BCM sends signals to several other components:

The Engine Control Module (ECM): This module controls the engine's operation. The BCM instructs the ECM to start the engine.
The Starter Motor: The ECM activates the starter motor, which turns the engine over until it starts.
The Fuel System: The ECM also signals the fuel system to deliver fuel to the engine.
The Climate Control System: If programmed, the BCM can also activate the climate control system to either heat or cool the cabin, depending on the outside temperature.

Crucially, the BCM monitors various safety parameters before and during the remote start process. For example, it checks if the hood is closed, if the transmission is in park, and if the security system is armed. If any of these conditions are not met, the remote start will be disabled. This is a built-in safety feature to prevent accidental starts or potential damage to the vehicle.

NissanConnect Services: Remote Start via Smartphone

Some 2017 Altima models may be equipped with NissanConnect Services, a subscription-based telematics system. This system allows you to control certain vehicle functions remotely using a smartphone app. Remote start is often one of these functions.

How NissanConnect Works

NissanConnect relies on a cellular connection within the car. The Altima has a built-in cellular modem that communicates with Nissan's servers. When you use the NissanConnect app to request a remote start, the app sends a signal to Nissan's servers, which then relay the command to the Altima via the cellular network. The car's telematics unit receives the command and initiates the same sequence of events described above (BCM, ECM, starter, etc.).

Analogy: Think of it like sending a text message to your car. You type the command ("Start Engine") into the app, and Nissan's servers act as the cell tower, transmitting the message to your Altima. The car then interprets the message and carries out your instructions.

Pros and Cons of Remote Start Systems

Key Fob Remote Start:

Pros: Relatively inexpensive (if already equipped), convenient for short-range starting, no subscription fees.
Cons: Limited range, requires direct line of sight (sometimes), no feedback on whether the car actually started.

NissanConnect Remote Start:

Pros: Longer range (as long as you have a cellular connection), remote start from anywhere, provides feedback on vehicle status (e.g., engine running, door locked), potential for additional features (e.g., remote door lock/unlock, vehicle location).
Cons: Requires a subscription, relies on cellular network availability, potential security vulnerabilities (though Nissan implements security measures to mitigate these risks).

Use Cases and Manufacturer Examples

Remote start systems are particularly useful in climates with extreme temperatures. In cold weather, they allow you to warm up the engine and defrost the windshield before you get in the car. In hot weather, they allow you to cool down the cabin before you start your journey. They are also beneficial for people with mobility issues who may need extra time to prepare for their trip.

Many manufacturers offer remote start systems, each with its own variations. Ford's FordPass, GM's OnStar, and Toyota's Remote Connect are examples of similar telematics systems that offer remote start functionality alongside other features like vehicle health reports and roadside assistance. All these systems operate on the same principle: a remote command is sent to the car, which then initiates the start-up sequence while monitoring safety parameters.

Troubleshooting Remote Start Issues

If your 2017 Altima's remote start is not working, here are a few things to check:

Battery: Ensure that the key fob battery is not dead or weak.
Hood Latch: Make sure the hood is fully closed. A faulty hood latch sensor can prevent the remote start from working.
Security System: Check if the security system is armed. If it is, disarm it and try again.
Error Codes: A diagnostic scan tool can reveal if there are any error codes related to the remote start system.
NissanConnect Subscription: If you're using NissanConnect, verify that your subscription is active.

Real-World Insights and Recommendations

Based on user reviews and common issues reported with the 2017 Altima's remote start, range can be a significant limitation with the key fob method. In urban environments with interference from other radio signals, the effective range can be significantly reduced. Upgrading to a long-range aftermarket remote start system might be a solution if range is a major concern. Alternatively, utilizing the NissanConnect service (if available and with a valid subscription) offers a more reliable, long-range solution, though it comes with the recurring cost of the subscription.

Another common issue is the sensitivity of the hood latch sensor. Even a slightly misaligned hood can prevent the remote start from working. Regularly cleaning and lubricating the hood latch mechanism can help prevent this problem. Furthermore, understanding the specific remote start sequence for your Altima's trim level is essential. Consult your owner's manual or contact your local Nissan dealership for clarification.

Ultimately, the 2017 Nissan Altima's remote start feature, whether accessed through the key fob or NissanConnect, provides a valuable convenience. Understanding how the system works and its limitations allows you to troubleshoot issues effectively and optimize its performance for your specific needs.