Black_raven Posted June 16 Share Posted June 16 Greetings, I am experiencing an unusual issue with my W208 soft top. The roof opens properly, but I am unable to shut it using switch S84. The S84 switch performs a 1-second self-test on power-up without issues for open/close operations. The s84 Switch is continuously illuminated when I attempt to shut the roof. The compartment cover attempts to descend somewhat when I am closing the roof; nevertheless, it does not open at all during this procedure, unlike while it is being opened. When the roof is in the compartment, the cover does not open, which I suppose is causing an error code due to excessive opening time. DAS is displaying fault number B1650 for the limit switch, however I cannot ascertain the specific extension code. I have verified all the limit switches according to the WIS resistance and voltage tests, and they all seem to function perfectly. Suggestions for further actions would be much appreciated. Quote Link to comment Share on other sites More sharing options...
coolguy Posted June 16 Share Posted June 16 I need the extension code, specifically the two numbers after B1650, to assist you with this matter. Quote Link to comment Share on other sites More sharing options...
Black_raven Posted June 16 Author Share Posted June 16 I really appreciate it. DAS was unable to access my Rollbar/soft top module. The basic code B1650 was readable by hhtwin. I am uncertain how to get the more precise extension, but I will endeavour to locate it. Is there a list of potential factors that may inhibit the cover from opening while the soft top is stored inside the compartment cover? Quote Link to comment Share on other sites More sharing options...
coolguy Posted June 16 Share Posted June 16 If the malfunction occurs just while the roof is retracted, it may be prudent to verify that it is not exerting pressure on the luggage cover and interfering with that switch. I have repaired several roofs throughout the years. They are really intricate. I own a worksheet that is beneficial; nonetheless, the extension code is required. The B1650 is imprecise and lacks directional guidance. The main problem with them is a sensor or switch on the left-hand bow ram that bends in the centre. Additional prevalent issues include the bow lock on the back deck, which may have leaks or malfunctioning switches. The deck lock situated between the rear headrests exists in two variations: one equipped with a switch and the other without. However, they often do not malfunction. The wiring next to the right-hand deck hinge is susceptible to fracturing at the points of vertical movement. Infrequent, however seen sometimes. The ECU may malfunction, often indicating the same issue with a switch even when all wiring and the switch have been thoroughly inspected and found to be flawless. This is mostly attributed to jump-starting or the disconnection/reconnection of the battery. It seems that this may cause surges in the ageing capacitors within. This was prevalent in earlier A124 and R129 models in the past. A208s seem to exhibit the same behaviour today as well. Components for these vehicles are becoming difficult to locate. Numerous components are now obsolete from Mercedes, and used parts are exorbitantly priced. Quote Link to comment Share on other sites More sharing options...
coolguy Posted June 16 Share Posted June 16 Quote Link to comment Share on other sites More sharing options...
coolguy Posted June 16 Share Posted June 16 It is uncertain whether this is discernible, but 1650 serves as an ambiguous reference. Alternative numerical values specify it precisely. Quote Link to comment Share on other sites More sharing options...
Black_raven Posted June 16 Author Share Posted June 16 Thank you for your assistance and expertise. The baggage blind is obscured by installing a large nut on the bling pin hole. All limit switches from the roof mechanics and roll bar have been tested for resistance both independently and with wiring to connector N52. The proper functioning of voltages is verified by all limit switches in accordance with the supplementary directives outlined in the WIS DTC memory diagnostic instructions. However, it is reassuring to acknowledge that they may still exhibit faults. I have already invested much effort in testing them, but I must continue. The only error code produced by hhtwin was B1650; I would want to have the enhanced extension number. I believed that the DTC memory diagnostic instructions for blind B1650, with all tests and measurements, would suffice without the need for additional extensions 00-12. Indeed, I would be aware of the potential causes of the problem associated with the expansion. It is still hypothesised that B1650_06, the maximum permitted duration for soft top activation of the soft top compartment open limit switch (S83/5), is responsible for the error code, since this occurs after all operations cease and no further actions transpire. I must engage more extensively with these items. Conversely, the WIS soft top diagnostic troubleshooting manual indicates that the symptom "steady illumination of the malfunction indicator lamp in the soft top operation switch (S84)" occurs while the vehicle is stationary and the power soft switch is not engaged. That is somewhat accurate. A constant light is illuminated (S84), however the cover is partially engaged (the compartment lid is somewhat retracted inside, but not extended outward). Even with the use of a specialised Mercedes tool... Remedy for the symptom. "Soft top or soft top compartment cover improperly secured, line or fuse circuit 30." I cannot comprehend circuit 30 more clearly. Instructions are provided to verify the locking mechanism. Both limit switches are functioning well; nevertheless, the lock necessitates considerable force when used manually, even with the hydraulic fluid removed. There are additional instructions to articulate the real values of HHT. I cannot comprehend the meaning of it. Additionally, some forums indicate that the method may need additional equipment, such as verifying if the rear windows are down. I am uncertain if an incident involving the compartment lid lock may impact the functioning of external equipment, such as the window or rollover bar, thereafter. Is it only the limit switch chain if the compartment lid opening operation has already commenced? I have observed the current pricing of the spare parts. There is no need to repair my roof if the cost of replacement parts exceeds the whole worth of the automobile. It is regrettable since the automobile is very appealing and I like it. This is why proficient expertise is very valuable. Thank you once again. Quote Link to comment Share on other sites More sharing options...
Black_raven Posted June 16 Author Share Posted June 16 The ambiguous phrase HHT may refer to Hand Held Tester, which I do not own, rendering it unhelpful at this juncture. Quote Link to comment Share on other sites More sharing options...
coolguy Posted June 16 Share Posted June 16 It is a handheld tester. Regrettably, I possess sufficient age to recall just what it entails. Currently, it operates as a simulation inside DAS as necessary. Quote Link to comment Share on other sites More sharing options...
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