HELP.....EMERGENCY!!!

[TOMGREEN413]

Just taken our e89 for its MOT, passed fine but on driving away from the garage or as we tried to leave the garage ALL the dash warning lights are on and the electric handbrake won't operate. I'm thinking alternater not charging enough or a battery issue? Any idea folk's! Thanks Tom

[deltasierra]

As it’s just had MOT. They plug into the OBD to check car settings etc
, if the disconnect procedure is wrong it messes up the electronics with some cars.

[Nictrix]

Is it possible the garage had the car sitting with ignition on testing all the lights etc for a while without the engine running and it has drained the battery?

[Ole gits rule]

As it’s just had MOT. They plug into the OBD to check car settings etc
, if the disconnect procedure is wrong it messes up the electronics with some cars.

Not certain I've ever seen them plug my car into the OBD at an MOT, could be wrong though

[Chippie]

I’ve never heard of the MOT checking the car settings, it’s possibly a ABS sensor but without reading the fault codes there’s just too much guess work.

[Ole gits rule]

Is it possible the garage had the car sitting with ignition on testing all the lights etc for a while without the engine running and it has drained the battery?

Quite possible.

Is the handbrake actually working and just the dash lights lit?

[smorris_12]

IME MOT places leave cars running while working thru everything to get it nice and hot for the emissions test. And to avoid the problem of flattening a ropey battery with endless short cycles.

Never heard of OBD codes being read in the UK. Happens in some states in the US.

[TOMGREEN413]

Thanks everyone for the prompt response, cars back home now and all seems fine, the garage cleared the faults and everything is now fine. Handbrake is now energising again also but I'm thinking they could have drained the battery power during the test, maybe they left the lights or ignition on without the engine running?

[clarker63]

I had exactly this after an mot. Personally i couldnt believe they drove it to the parking space without noticing all those lights on.. they told me to drive it away as the 'lights would go off'. I've never taken it back to them as you can imagine!

20200208_103305.jpg (174.73 KiB) Viewed 559 times

[matsmith749]

Million unrelated faults at once? Battery.

Get it properly charged up & hope not screwed.

Get the age of the battery checked, if over 5 years (or just no idea) it's time to replace it.

Thanks us later.

[deltasierra]

I don’t know why the plug into the car but they do JLR vehicles have had problems if not shut down correctly. Otherwise as others have said charge battery fully and cancel the trouble codes

Here is why
https://mattersoftesting.blog.gov.uk/wh ... s-for-you/

It’s bo!!OK$ but a fact of life

[smorris_12]

Interesting. Getting OBD data for VIN and, presumably, sensor data makes a lot of sense. I bet they're unplugging the OBD connector when it's running then that's upsetting things.

I did once manage to prevent a BMW starting after having it plugged into INPA which was scary. I can't remember what I did but I've always been a bit paranoid since about disconnecting only after quitting the software and turning the ignition off.

[matsmith749]

Never seen or heard of an MOT tester going anywhere near the OBD port in all my years.

Is this just a bit of guesswork?

[Rockhopper]

The have to check that the VIN is physically stamped or otherwise visibly marked on the car, there is no reason they should be going anywhere near the OBD socket.

[smorris_12]

Read between the lines in the link. This "connected" they're talking about implies reading stuff direct from the car. And there's only one place that could come from...