Strange Behaviour with 4x4/ABS Light

[willy_manily]

Hi there,

Having some strange issues with my car and hoping somebody can shed some light on it! I have a 2006 E53 X5 with 180k on the clock. I have just had the car serviced where they replaced a rear control arm and gave the car an oil change.

Once I picked up the car, everything was fine and it was driving smooth and had no issues. However two days later I turned on the car in the morning and I had three lights illuminated on the dashboard, the yellow 4x4 light, ABS light and the light that is next to that (see photo here: Screenshot by Lightshot ). I pull into a service station and turn the car off, get back in the car and all the lights are off on the dashboard.

Three days later (today), I now have the yellow 4x4 light back on the dash again. I've started the car a few times and driven it around the block and it hasn't cleared.

I've got the car on charge now (hoping that it's just the battery low in voltage). I also tried the full lock steering cycle a few times to see if that cleared the fault.

Driving the car today I did notice a slight lag on the gearbox which I haven't felt before.

Sorry for the long winded question above. Has anybody experienced similar issues/know what could be causing this?

[deepblonde]

Do you hear a clicking sound after turning off your motor? If so it could just be the transfer case actuator gear:
https://xoutpost.com/bmw-sav-forums/...otor-gear.html

[willy_manily]

Originally Posted by deepblonde

Do you hear a clicking sound after turning off your motor? If so it could just be the transfer case actuator gear:
https://xoutpost.com/bmw-sav-forums/...otor-gear.html

Hi there,

Now that you mention it, today I did hear a clicking noise at the petrol station!

I'll look into it!

[deepblonde]

Originally Posted by willy_manily

Hi there,

Now that you mention it, today I did hear a clicking noise at the petrol station!

I'll look into it!

You can just replace the gear in the actuator, a cheap and easy fix:

https://youtu.be/3xEJbpVupuw

[willy_manily]

I've just ordered the replacement gear, hopefully it will arrive tomorrow and i'll have it fixed tomorrow night.

Would this gear explain the slight lag I'm experiencing as I accelerate/change gear?

[deepblonde]

Originally Posted by willy_manily

I've just ordered the replacement gear, hopefully it will arrive tomorrow and i'll have it fixed tomorrow night.

Would this gear explain the slight lag I'm experiencing as I accelerate/change gear?

I don't think so, but I guess it's possible, you'll know soon enough!
Could be a trans issue, or perhaps if this has happened after your last service, I vaccum line is damaged or disconnected.

[willy_manily]

Hi there,

The part finally came today and in just over an hour I have a working car with no more errors on the dash! Thanks guys for all your help.

During the gear swap, I did notice that both sides of the gear had some wear, it appears that the gear had been swapped before. However, the case and bolts looked brand new so i'm not sure if this makes sense :P

Cheers