This observation started about 5 years ago when a friend won't understand my refusal to allow him jumpstart his car with my car battery. In a bid to pacify him, I paid a battery charger who did the job in a jiffy.

My car was a 2003 Toyota Camry and I had noticed the car vibrates and shivers once the battery terminals were removed and reconnected. The engine revs (RPM) fluctuates and the car jerks when in motion. Abi nah cold they catch you?? This could happen for about 30 minutes or more before the engine speed would normalize.

Afterwords, I began to notice other cars that have their own peculiar syndrome.

These are some of the issues I have seen in other cars when their batteries are disconnected:

1) Passenger's window will not roll down for 2 days before it starts to work again.
2) I have also seen check engine lights come up falsely.
3) AC stopped working until it was reprogrammed with a scan tool.
4) Faulty airbag code comes on.
5) Some cars may not even start at all.

Thank God my current car does not have any of these issues. However, I am sure some of us still get these annoying battery problems.

Tell us the attitude your car gives when you disconnect the battery and how you manage it.

https://autojosh.com/disconnect-the-battery/

Cc
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Obinoscopy

Noted... It's good to be enlightened... Thanks for the observation OP.

Yes, before you disconnect the battery, you must switch off the car and wait for 15 to 30 minutes, so that all the systems and their ecu will go to sleep.

my car do not have any issue like the ones listed by the op whenever the battery is reconnected.

the only thing I have noticed though is that the MPG reading no longer shows.

I am still looking for the trick to bring it back on.

my car is a BMW 323i Touring 2000 model.

Well, I haven't noticed such in my car.

He done get headache

Ah no get car ....... op

Nice info

The car shake as u said wen removing the battery head on toyota camary 2013 and I even notice the shake on a pontiac vibe of my friend.

My radio request for a code. That's all. Honda civic

my own BMX bicycle no dey do like this

ok

The only thing I noticed is that when ever I remove the battery the vibration increases for 15mins or so

I think toyota cars are more prone to the after effects of a disconnected battery. it's likely due to the ECU attempting to recalibrate itself or something like that. I noticed it when I owned a Camry too. however, I haven't noticed it in my accord. except for the radio code request, nothing more.

she starts crying...

nothing, except the tape and the clock that will reset

It reacts like Nigerians on social media

HMMMMMMMMMM

Pls, Mercedes Peugeot, Opel etc fans, put your key in the ignition crank the car on and then turn off the ignition and remove the battery. Reconnect the battery and try restarting the car with the key.

I'd not be held liable for any immobilizer issues o

Okay

Car stereo system not working and reverse camera not showing again 2014 4runner. It's been weeks now and the driver said it was when he removed the battery. That we need to use computer to re program it.

Don't know how true and what to do sef

GAZZUZZ:
most people do not read the car manual.

Morning Boss.

So, the OP's observations are all true.

What do you recommend?

Very interesting topic... I also had the same experience some years ago on the 2003 Camry. The first time it happened, I was like MMM! (moku mogbe modaran). My Kazeem told me that the sensor needed to reset and that i should let the engine steam, so I left it running for like 30 mins.
Well, i bought a jumper kit to avoid disconnecting the battery terminals. Didn't experience it again until i sold the car.

Car stereo went into safe mode.

Once you disconnect your battery head it disrupts the Engine/Powertrain Control Module (ECM/PCM) of your vehicle. It would take about 30 minutes driving for the vehicle's ECM/PCM to reconfigure the performance of the vehicle

It's normal in those camrys (big for nothing). Wot I do is switch on the a/c.

The vibration lasts for a whole day for my 08 Camry, very annoying.
The last time a change the battery of my bmw E70 ...eh...time will fail me .