MG4 Smart key not detected. Alarm going off.

[Swampy]

Got the car back just a while back.
Asked the three questions.

1. What happened.
2. What did you do to fix it.
3. How can we prevent this from happening again.

For the alarm sounding:

1. The signal/comms was lost between the key and the car so that’s why I got the message “smart key not detected” when I attempted to start the car.
2. They have a known software update for this issue so applied it.
3. Been told this will resolve future issues.

Errors/warning symbols:

1. When you disconnect the 12v Battery and go to reconnect it errors will show on the screen.
2. You need to recalibrate the system by turning the steering wheel all the way to the right and hold it for a few seconds. Then all the way to the left and hold for a few seconds. This should clear the warning symbols.
3. Don’t disconnect the battery if at all possible. If you do see above.

The reason the AA guy had to use the battery pack to allow me to get the car into Drive their thoughts are the battery had got so low it just needed that extra boost to allow me to drive it.

They have tested the battery and all seems ok. See how this goes.

I asked if they would be a recall for the software update relating to the issue above. Not at this moment in time the dealership told me.

I have had the car a month now and all the latest software was applied at that time.
Today they applied another 5 available software updates including the one above. It seems this will be common pattern of updates been applied as and when.

So my emergency kit now includes:
Flat screwdriver to open the boot.
10mm spanner to disconnect the battery.
Mini battery booster.
Instructions on recalibrating stuck to my sun visor.

This doesn’t include my pre flight check list!!

 

[AndyL61]

Got the car back just a while back.
Asked the three questions.

1. What happened.
2. What did you do to fix it.
3. How can we prevent this from happening again.

For the alarm sounding:

1. The signal/comms was lost between the key and the car so that’s why I got the message “smart key not detected” when I attempted to start the car.
2. They have a known software update for this issue so applied it.
3. Been told this will resolve future issues.

Errors/warning symbols:

1. When you disconnect the 12v Battery and go to reconnect it errors will show on the screen.
2. You need to recalibrate the system by turning the steering wheel all the way to the right and hold it for a few seconds. Then all the way to the left and hold for a few seconds. This should clear the warning symbols.
3. Don’t disconnect the battery if at all possible. If you do see above.

The reason the AA guy had to use the battery pack to allow me to get the car into Drive their thoughts are the battery had got so low it just needed that extra boost to allow me to drive it.

They have tested the battery and all seems ok. See how this goes.

I asked if they would be a recall for the software update relating to the issue above. Not at this moment in time the dealership told me.

I have had the car a month now and all the latest software was applied at that time.
Today they applied another 5 available software updates including the one above. It seems this will be common pattern of updates been applied as and when.

So my emergency kit now includes:
Flat screwdriver to open the boot.
10mm spanner to disconnect the battery.
Mini battery booster.
Instructions on recalibrating stuck to my sun visor.

This doesn’t include my pre flight check list!!

Glad your car is sorted and thanks for the detailed explanation and remedy.

 

[Swampy]

My glass is still half full. ?

 

[richardk]

we live in

ust got into my MG4 SE SR. pressed the brake pedal to select D for drive and a warning appeared on the screen in front of me “Smart Key Not Detected” then the car alarm was going off. First

We live in the Netherlands, have a new MG4 and have had similar problem 5 times over last 2 months. Same warning appears after entering the car, can still drive, then after stop and opening a door the alarm goes off and we need to wait for it to stop - which it does after minutes (pushing any key buttons doesnt work). The app notes that “abnormal entry of the vehicle has triggered an alarm”. Tomorrow car is going to the garage - they say they don’t know what is happening. Any further advise appreciated

 

[tsedge]

we live in

We live in the Netherlands, have a new MG4 and have had similar problem 5 times over last 2 months. Same warning appears after entering the car, can still drive, then after stop and opening a door the alarm goes off and we need to wait for it to stop - which it does after minutes (pushing any key buttons doesnt work). The app notes that “abnormal entry of the vehicle has triggered an alarm”. Tomorrow car is going to the garage - they say they don’t know what is happening. Any further advise appreciated

I think there is an update for this. Otherwise try changing the key battery if you haven't already.

If you have a Trophy see if it works with the Smart Key on your phone, that will eliminate the key as the issue (or confirm it).

 

[richardk]

we live in

ust got into my MG4 SE SR. pressed the brake pedal to select D for drive and a warning appeared on the screen in front of me “Smart Key Not Detected” then the car alarm was going off. First

We live in the Netherlands, have a new MG4 and have had similar problem 5 times over last 2 months. Same warning appears after entering the car, can still drive, then after stop and opening a door the alarm goes off and we need to wait for it to stop - which it does after minutes (pushing any key buttons doesnt work). The app notes that “abnormal entry of the vehicle has triggered an alarm”. Tomorrow car is going to the garage - they say they don’t know what is happening. Any further advise appreciated

 

[Ian Key]

we live in

We live in the Netherlands, have a new MG4 and have had similar problem 5 times over last 2 months. Same warning appears after entering the car, can still drive, then after stop and opening a door the alarm goes off and we need to wait for it to stop - which it does after minutes (pushing any key buttons doesnt work). The app notes that “abnormal entry of the vehicle has triggered an alarm”. Tomorrow car is going to the garage - they say they don’t know what is happening. Any further advise appreciated

As tsedge has said there is an update for this and has been the subject to a safety recall in the UK.

 

[Eber]

So my emergency kit now includes:
Flat screwdriver to open the boot.
10mm spanner to disconnect the battery.
Mini battery booster.
Instructions on recalibrating stuck to my sun visor.

This doesn’t include my pre flight check list!!

You might just want to take your pre-war Bentley if you're in a hurry! ?

 

[Ayoull]

we live in

We live in the Netherlands, have a new MG4 and have had similar problem 5 times over last 2 months. Same warning appears after entering the car, can still drive, then after stop and opening a door the alarm goes off and we need to wait for it to stop - which it does after minutes (pushing any key buttons doesnt work). The app notes that “abnormal entry of the vehicle has triggered an alarm”. Tomorrow car is going to the garage - they say they don’t know what is happening. Any further advise appreciated

It was handled under RC008 in the UK