Alph-bard Posted March 19 Share Posted March 19 My goodness! I have been hearing more noise from the rear of my Mk1 this week. Like a window was open, and a rattle. The rattle was really irritating me, so I sat in the back while my wife drove. To my horror, the rear door unlocked by itself! I have tried this in a few conditions now. Static: I manually closed the rear door. Within 40 seconds it unlocked itself, to the point I could put my fingers behind the door and wobble. It appears to still be on the latch, but very concerning. I then tried it electronically, which closed the boot, locked it. Then unlocked it and the boot moved slightly, again leaving finger space so I could wobble the boot door. Slowly moving: both manually and electronically I closed the boot door. Jumped straight into the Alphard, Staithes engine and pulled off. I can get about 20 metres and the same result. The boot door unlocks. Disabled electronically assist doors: manually closed and then Jumped in Alphard. Locked all doors with the lock button inside the drivers door. I moved off, maybe drove 50 metres and the door unlocked itself again.... Any suggestions? Cheers Dan Quote Link to comment Share on other sites More sharing options...
Rojie Posted March 20 Share Posted March 20 16 hours ago, Alph-bard said: My goodness! I have been hearing more noise from the rear of my Mk1 this week. Like a window was open, and a rattle. The rattle was really irritating me, so I sat in the back while my wife drove. To my horror, the rear door unlocked by itself! I have tried this in a few conditions now. Static: I manually closed the rear door. Within 40 seconds it unlocked itself, to the point I could put my fingers behind the door and wobble. It appears to still be on the latch, but very concerning. I then tried it electronically, which closed the boot, locked it. Then unlocked it and the boot moved slightly, again leaving finger space so I could wobble the boot door. Slowly moving: both manually and electronically I closed the boot door. Jumped straight into the Alphard, Staithes engine and pulled off. I can get about 20 metres and the same result. The boot door unlocks. Disabled electronically assist doors: manually closed and then Jumped in Alphard. Locked all doors with the lock button inside the drivers door. I moved off, maybe drove 50 metres and the door unlocked itself again.... Any suggestions? Cheers Dan Hello Dan, Do you have the Smart Lock System ? Quote Link to comment Share on other sites More sharing options...
Alph-bard Posted March 21 Author Share Posted March 21 On 3/20/2023 at 11:52 AM, Rojie said: Hello Dan, Do you have the Smart Lock System ? Hello Roger, nice to meet you! I have no idea, could you let me know how I confirm that please? Cheers Dan Quote Link to comment Share on other sites More sharing options...
Rojie Posted March 21 Share Posted March 21 2 hours ago, Alph-bard said: Hello Roger, nice to meet you! I have no idea, could you let me know how I confirm that please? Cheers Dan You will have a separate fob for it. Just three buttons. Lock, unlock and tailgate. The reason I ask is it can, when programmed through the head unit, perform all kinds of tricks with the locking system. I was just wondering whether it has some bug or other malfunction; perhaps needing a new fob battery. Doors can be programmed to lock after you drive off, etc. Is your rear hatch electrically assisted? On another line of thinking, I believe the rear hatch has obstruction detectors. perhaps there is a malfunction there. I am just guessing, as no-one else (in my recollection) has reported such a situation ! 1 Quote Link to comment Share on other sites More sharing options...
Chris.ac Posted March 21 Share Posted March 21 You have electric tailgate? Do you have 'soft close' (where a motor pulls door tight if you don't close it fully?) It sounds like the soft close motor is disengaging, maybe a loose connection, or debris in the latch mechanism? My Softclose had a rattle, I took off the rear plastic trim, and 2 of the screws that hold the lock mechanism had worked their way completely loose! 1 Quote Link to comment Share on other sites More sharing options...
Alph-bard Posted March 22 Author Share Posted March 22 9 hours ago, Rojie said: You will have a separate fob for it. Just three buttons. Lock, unlock and tailgate. The reason I ask is it can, when programmed through the head unit, perform all kinds of tricks with the locking system. I was just wondering whether it has some bug or other malfunction; perhaps needing a new fob battery. Doors can be programmed to lock after you drive off, etc. Is your rear hatch electrically assisted? On another line of thinking, I believe the rear hatch has obstruction detectors. perhaps there is a malfunction there. I am just guessing, as no-one else (in my recollection) has reported such a situation ! This might be spot in then Roger. I do have that fob yes. We had a head unit fitted on the weekend (android upgrade) although the issue was happen beforehand, so I suspect this is unrelated. It may be the fob, or as you say, sensors. Fault finding action is required. I appreciate your response and suggestions 😊 Cheers Dan Quote Link to comment Share on other sites More sharing options...
Alph-bard Posted March 22 Author Share Posted March 22 9 hours ago, Chris.ac said: You have electric tailgate? Do you have 'soft close' (where a motor pulls door tight if you don't close it fully?) It sounds like the soft close motor is disengaging, maybe a loose connection, or debris in the latch mechanism? My Softclose had a rattle, I took off the rear plastic trim, and 2 of the screws that hold the lock mechanism had worked their way completely loose! This a a great idea 💡 ok, I will check that Chris! Roger suggested a couple of potential investigations too. I will look at it this week and report back to the group. Have a good day, Dan Quote Link to comment Share on other sites More sharing options...
Alph-bard Posted April 15 Author Share Posted April 15 Oddly after cleaning tge obstruction sensors the issue has not reoccurred. So, at the moment I belive it was exactly that.. dirty sensors??? Thank you all for your help and pointers, much appreciated 🙏 Quote Link to comment Share on other sites More sharing options...
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