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Gave my w212 e63(pre facelift but 5.5 biturbo) for wrap. The car had zero errors earlier. Naturally, bumpers etc have to come off for the wrap job. Upon collecting the car, I got 2 errors:
1. Distronic inoperable
2. Blind spot assist inoperable
Can’t engage cruise control either. I seem to have lost auto window up/down function on driver side too.
Ideally don’t wanna open up the car panels again. Any suggestions for remedy?
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
You need to recalibrate your radar for the Distronic and Blind spot assist. There is a procedure in XENTRY that initiates the recalibration, and then you need to drive for about 15 minutes. If you don't have XENTRY, you should seriously consider a BenzNinja Club membership if you plan to do DIY stuff. You get XENTRY, WIS/ASRA, EPC, and other essential software plus lifetime hands-on diagnostics support.
Last edited by JettaRed; Oct 12, 2024 at 03:00 PM.
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Using XENTRY, select the A89 - DISTRONIC module. Select the Adaptations tab and Initial startup. Select Initial startup without control unit replacement under Initial startup with adjustment drive (the third item down).
Read the instructions and then select Continue.
Once you select Continue, you will need to take a drive of 10-15 minutes until you get the message, DTR AVAILABLE AGAIN. If you leave XENTRY connected, it will display your progress during recalibration. Having XENTRY with you is NOT necessary.
Last edited by JettaRed; Oct 19, 2024 at 09:21 AM.
Good job noticing the auto-windows ALSO disfuntioning besides all the analog radar modules
This commonality points to a simple low voltage issue. No big deal.
-- Right now your chassis needs at least a really good battery charge to begin with.
-- Do not rely on ALT to charge a flat batt !!
-- AUX batt if present may need attention as well.
-- Go clean your "Main GND Strap"!
Electricals are weak. The chassis was kept awake too long during the shop job.
+++ RADAR SOAKERS...
While your bumper radar modules still work,
take 10mn to RTV seal their leaky connectors.
Once water soaks in... modules will need replacement one after another.
✌️
Last edited by CaliBenzDriver; Oct 12, 2024 at 03:26 PM.
Roll up, release, and hold the bottom up again for about 5 seconds. Do the same for rolling down, but hold the bottom down for 5 seconds.
JR, you know the auto-stop functionality is based on a learned current range.
For equal power, when the voltage is lower, the current is higher and the DCU sees that as being its Max threshold value.
Window stops when it shouldn't!!
This is just standard nagging.
When normal voltage range is restored, normal current falls within the range its suposed to.
What's next is... Don't Fry The Alternator !
🤞
I had one of my window do the reverse dance the other day when seal was folding inward in 100°F heat with engine stopped - reSoldered DCU!
Last edited by CaliBenzDriver; Oct 12, 2024 at 03:39 PM.
Good job noticing the auto-windows ALSO disfuntioning besides all the analog radar modules
This commonality points to a simple low voltage issue. No big deal.
-- Right now your chassis needs at least a really good battery charge to begin with.
-- Do not rely on ALT to charge a flat batt !!
-- AUX batt if present may need attention as well.
-- Go clean your "Main GND Strap"!
Electricals are weak. The chassis was kept awake too long during the shop job.
+++ RADAR SOAKERS...
While your bumper radar modules still work,
take 10mn to RTV seal their leaky connectors.
Once water soaks in... modules will need replacement one after another.
✌️
While I changed the main battery a month ago, the aux battery is old. Once the car was garaged for a week and I got aux battery discharged msg on cluster. When I collected the car today from the shop, the clock was out which points to either the battery getting flat or may be they took the terminals off for a safe job.
Also when I manually roll up the driver window, it goes all the way up and then rolls down just 0.5-1”. The sideview blind spot lights are permanently on since bs assist is inoperable.
+++ RADAR SOAKERS...
While your bumper radar modules still work,
take 10mn to RTV seal their leaky connectors.
Once water soaks in... modules will need replacement one after another.
✌️
Could you please elaborate this part? Didn’t get it.
While I changed the main battery a month ago, the aux battery is old. Once the car was garaged for a week and I got aux battery discharged msg on cluster. When I collected the car today from the shop, the clock was out which points to either the battery getting flat or may be they took the terminals off for a safe job.
Also when I manually roll up the driver window, it goes all the way up and then rolls down just 0.5-1”. The sideview blind spot lights are permanently on since bs assist is inoperable.
I see... you got a pre-existing combination.
the Main Batt
the Aux Batt
the BS Modules
the windows dancing
...
Not all these issues are related to low voltage but good voltage is at the root of everything. So aleays keep this "Must Have" as a top priority.
You having just renewed Main Batt suggest there may be a recurring condition... besides the body shop working on car for prolonged time.
Up to you to decide if AUX needs replacement or if it got drained by a sleepless chassis...
I would charge the MAIN batt and observe the IC Display voltage while driving.
The ALT must supply 100% of all electrical load... sometimes it doesn't because of CAN-Bus issues -->> This is where your rear radars may be causing your "battery drain while driving"...
So I would disconnect the already soaked bumper module + cover the bad harness plug to prevent CAN-Bus short-circuits that can also cause "No-Crank/No-Start".
This is a lot on your plate...have you asked your local MB specialist for help??
Notice we are not replacing any parts before systems are tested. New battery does not resolve discharging condition.
Last edited by CaliBenzDriver; Oct 12, 2024 at 05:17 PM.
Thankfully it was just a disconnected grip which caused the entire front bumper sensors raising errors. Per my understanding, this open circuit was also slowly draining the battery.
Connected the grip and cleared the DTCs from a normal scanner. Good to go now, phew!
Thankfully it was just a disconnected grip which caused the entire front bumper sensors raising errors. Per my understanding, this open circuit was also slowly draining the battery.
Connected the grip and cleared the DTCs from a normal scanner. Good to go now, phew!
MB connectors don't get disconnected by themselves... there may have been a good reason for these modules to be disconnected out of network.
See what sort of disruption pans out.
This car has experienced a low voltage
Last edited by CaliBenzDriver; Oct 19, 2024 at 12:40 PM.
MB connectors don't get disconnected by themselves... there may have been a good reason for these modules to be disconnected out of network.
See what sort of disruption pans out.
This car has experienced a low voltage
The car went for a complete wrap job and hence the bumpers, grill etc were taken off. Most likely the guys putting the parts back together forgot to connect the sensors
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Originally Posted by RHDC63
The car went for a complete wrap job and hence the bumpers, grill etc were taken off. Most likely the guys putting the parts back together forgot to connect the sensors
That would make sense since the codes are both STORED and CURRENT.
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