Why does it bong when I drive over a hump?

[emax]

An observation when I drive a particular route. It is reproducible.

When I drive to Christian & Vera (like the day before yesterday), there is a junction of a hillside street with another street where you have to drive a sharp turn over a fairly steep asphalt hump, about a meter in diameter. Whenever I do so, the Grenadier issues a bong, but there is no message on the screen and nothing seems to change. It is not like driving fast over a speed breaker, I'm quite slow in that moment: the junction can not be driven with much more than walking speed, I can not test weather or not a cruise control would drop out. But this is not the point here.

The interesting question is: "why does it bong"?

 

[AnD3rew]

My guess is rear doors. A few of us have had rear door sensor’s misaligned.

 

[Voader - Oudersopzwier]

Indeed, I think a sensor of (probebly) the rear door who needs some more adjustment.

 

[OGrid]

Would be of interest if you could eliminate the Electronic Stability Control playing a part and disable the ESC for a test run.

 

[Ever Pragmatic]

An observation when I drive a particular route. It is reproducible.

When I drive to Christian & Vera (like the day before yesterday), there is a junction of a hillside street with another street where you have to drive a sharp turn over a fairly steep asphalt hump, about a meter in diameter. Whenever I do so, the Grenadier issues a bong, but there is no message on the screen and nothing seems to change. It is not like driving fast over a speed breaker, I'm quite slow in that moment: the junction can not be driven with much more than walking speed, I can not test weather or not a cruise control would drop out. But this is not the point here.

The interesting question is: "why does it bong"?

Rear doors.. if you look at the screen when you next go over the hump, you should see the rear door open icon flash up for a split second..

 

[emax]

A rear door sensor complains when driving over a hump. That's absolutely crazy.

Thank you all so much for the replies. It never occurred to me that a back door sensor could be the cause.

Next time, I'll switch of ESC before I drive there.


BTW: concerning crazy effects with sensors: Christian had a problem with his Range Rover switching to limp mode. When I was there on Friday, he told/showed me the cause he had found.

I'm not entitled to tell you more. But the solution will be revealed within the next (two?) videos. It is totally crazy, I really had to laugh.

 

[Ever Pragmatic]

A rear door sensor complains when driving over a hump. That's absolutely crazy.

Thank you all so much for the replies. It never occurred to me that a back door sensor could be the cause.

Next time, I'll switch of ESC before I drive there.


BTW: concerning crazy effects with sensors: Christian had a problem with his Range Rover switching to limp mode. When I was there on Friday, he told/showed me the cause he had found.

I'm not entitled to tell you more. But the solution will be revealed within the next (two?) videos. It is totally crazy, I really had to laugh.

Forgot to mention that the bong cleared once I’d had the update done….
on a separate note, LRTime is essential viewing on Sunday mornings here and the FFRR project is most entertaining.. C&V come across as a very nice couple and C really knows his onions.

 

[Krabby]

A rear door sensor complains when driving over a hump. That's absolutely crazy.

Thank you all so much for the replies. It never occurred to me that a back door sensor could be the cause.

Next time, I'll switch of ESC before I drive there.


BTW: concerning crazy effects with sensors: Christian had a problem with his Range Rover switching to limp mode. When I was there on Friday, he told/showed me the cause he had found.

I'm not entitled to tell you more. But the solution will be revealed within the next (two?) videos. It is totally crazy, I really had to laugh.

@emax the YouTube celebrity insider

 

[emax]

the YouTube celebrity insider

From my window I can see his house in the neighboring village.
So it's not because I have a good source.

I am the source.

 

[ADVAW8S]

Anymore collaboration between you guys? It would be a fun road trip with each you driving each other's cars on and off road.

 

[Jean Mercier]

A rear door sensor complains when driving over a hump. That's absolutely crazy.

Never had that "complaint" (true, I think so and mean it), but I glued my rear doors (false, bullshit, I don't mean it), Happy New Year

 

[Tazzieman]

Never had that "complaint" (true, I think so and mean it), but I glued my rear doors (false, bullshit, I don't mean it), Happy New Year

That's dumb. I just duct taped mine closed. As a bonus effect ,it stops the door sills getting scratched.

 

[Stu_Barnes]

An observation when I drive a particular route. It is reproducible.

When I drive to Christian & Vera (like the day before yesterday), there is a junction of a hillside street with another street where you have to drive a sharp turn over a fairly steep asphalt hump, about a meter in diameter. Whenever I do so, the Grenadier issues a bong, but there is no message on the screen and nothing seems to change. It is not like driving fast over a speed breaker, I'm quite slow in that moment: the junction can not be driven with much more than walking speed, I can not test weather or not a cruise control would drop out. But this is not the point here.

The interesting question is: "why does it bong"?

@emax that’s the perfect candidate for the “what’s this error” monthly competition. Have you managed to get a video of the sound and the centre screen yet?

 

[GN4HIR]

Ok, I have a case of the 'Bong' on bumps due to the rear door. Anyone adjusted this away? If so, was it by moving the latching bar (inward I'd guess) and did you do the top, bottom or both.. Or is there another method.

BTW, what purpose does the upper and lower conical plastic prong on the door and receiving receptacle in the door frame serve (see how I didn't resort to calling boy and girl parts), are they merely for alignment?

 

[anand]

Ok, I have a case of the 'Bong' on bumps due to the rear door. Anyone adjusted this away? If so, was it by moving the latching bar (inward I'd guess) and did you do the top, bottom or both.. Or is there another method.

BTW, what purpose does the upper and lower conical plastic prong on the door and receiving receptacle in the door frame serve (see how I didn't resort to calling boy and girl parts), are they merely for alignment?

Super easy to adjust, and most frequently it is because the rear door is too tight, not too loose; however, as always, your mileage may vary.

The adjustment is done on the body side of the vehicle. Open both rear doors, locate the latches on the body side. The plastic cover that surrounds them pulls directly down, and requires quite a bit of force to remove. Then grab a 13mm and very slightly loosen the bolts holding the latch for the 70 side door. Move this latch outward very slightly, tighten, and take for a road test. I found on mine that the 13mms on both latches weren't fully tightened, and probably had something to do with my bong'ing becoming more frequent since ownership.

Also, yes, the conical pieces are for alignment as it closes

 

[Tomdoc]

A rear door sensor complains when driving over a hump. That's absolutely crazy.

Thank you all so much for the replies. It never occurred to me that a back door sensor could be the cause.

Next time, I'll switch of ESC before I drive there.


BTW: concerning crazy effects with sensors: Christian had a problem with his Range Rover switching to limp mode. When I was there on Friday, he told/showed me the cause he had found.

I'm not entitled to tell you more. But the solution will be revealed within the next (two?) videos. It is totally crazy, I really had to laugh.

LRTime is the only YT channel both me and my wife watch together - it is our Sunday morning tradition and our only Patreon one. We don't have any LRs anymore either but they are informative, funny and educational. Please give Vera and Christian our regards! Tom and Courtney !!

 

[emax]

@emax that’s the perfect candidate for the “what’s this error” monthly competition. Have you managed to get a video of the sound and the centre screen yet?

Hi Stu,

it's been a while since you asked that as I had lost track of this thread.

No, I don't have an audio recording and (hopefully) won't be able to record it in the future as the agent fixed the problem. But don't ask me how. When I ask them what they changed I get the answer "We don't disclose information on warranty work".

Yes, an idiotic answer and I think they follow the strategy of "a customer can't claim if they don't have information."

For the German readers: My agent is Krah + Enders.

 

[emax]

Please give Vera and Christian our regards! Tom and Courtney !!

I'll do my best not to forget it next time.

 

[Bordersam]

Super easy to adjust, and most frequently it is because the rear door is too tight, not too loose; however, as always, your mileage may vary.

The adjustment is done on the body side of the vehicle. Open both rear doors, locate the latches on the body side. The plastic cover that surrounds them pulls directly down, and requires quite a bit of force to remove. Then grab a 13mm and very slightly loosen the bolts holding the latch for the 70 side door. Move this latch outward very slightly, tighten, and take for a road test. I found on mine that the 13mms on both latches weren't fully tightened, and probably had something to do with my bong'ing becoming more frequent since ownership.

Also, yes, the conical pieces are for alignment as it closes

Good advice and a solution that works. Mine had been bong'ing and showing the rear door open warning intermittently since new. Moving the latch outward slightly allows it to make a better contact with the receiver. The door remains tight to the seal and no more warnings ....

Great result - thanks.

 

[GN4HIR]

Good advice and a solution that works. Mine had been bong'ing and showing the rear door open warning intermittently since new. Moving the latch outward slightly allows it to make a better contact with the receiver. The door remains tight to the seal and no more warnings ....

Great result - thanks.

Glad that Anand's suggestion worked for you. At first I thought the door wasn't closed tightly and adjusted the hook in slightly. Bong city! Made it 2 blocks from my house and turned around and came back. I then moved the hook out a bit and 90% of the bong went away. However, I still got bonged anytime I had a big dip in the road. I have a bigger tire and rotopax on the rear door. I then started wincing every time I hit a bump expecting a bong.

So.. and don't report me to the Ineos authorities, I pulled the upper plastic panel on the 70 door (I'd had it off when installing my Wolfbox) and snipped, stripped and crimped the two small wires that convey 'open door' back to the vehicle. Now, I can drive through any bump/dip in silence. I suppose I could reconnect them if I ever needed to..