Jumpy starts with MY05 545i
03-07-2007, 08:32 AM
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My Ride: 2005 545i, Orient Blue/Beige, Navigation, Premium Sound, Cold Weather, PDC, split-folding rear seats, DIY iPod. DIY Valentine 1 hardwire, loose nut behind the wheel.
On most cars I've owned, as you press the pedal more you get progressively more power. On most luxury cars, this translates into a very smooth launch from a full stop. On most cars, the progression from the point of first pressing the gas pedal goes something like this:
1. Smoothly pull away from the stop
2. Go a little faster
3. Go a little faster
4. Go a little faster
On my 545i, the progression is more like this:
1. Nothing
2. Nothing
3. Nothing
4. JACK-RABBIT DRAG RACE JUMP START AND GO LIKE A BAT OUT OF HELL WHILE SPILLING ANY LIQUIDS IN THE CAR AND FRIGHTENING ALL PASSENGERS TO THE POINT OF HEART ATTACKS
While this kind of power is fun to have on tap, I figure a luxury car of this quality should allow me to not get whiplash when I want to move. I don't have a lead foot (when I don't intend to have one), but I just can't seem to get this car to take off smoothly from a dead stop or even a "California stop". Is anyone else experiencing this, or do I have a faulty system somewhere?
1. Smoothly pull away from the stop
2. Go a little faster
3. Go a little faster
4. Go a little faster
On my 545i, the progression is more like this:
1. Nothing
2. Nothing
3. Nothing
4. JACK-RABBIT DRAG RACE JUMP START AND GO LIKE A BAT OUT OF HELL WHILE SPILLING ANY LIQUIDS IN THE CAR AND FRIGHTENING ALL PASSENGERS TO THE POINT OF HEART ATTACKS
While this kind of power is fun to have on tap, I figure a luxury car of this quality should allow me to not get whiplash when I want to move. I don't have a lead foot (when I don't intend to have one), but I just can't seem to get this car to take off smoothly from a dead stop or even a "California stop". Is anyone else experiencing this, or do I have a faulty system somewhere?
03-07-2007, 08:55 AM
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My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic
Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe
Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem
Suspension: Renntech Lowering Module
Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20
-----------------------------------------
2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav
Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips!
Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint
Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston
Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R
Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3
MOST IMPORTANT: Hardwired V1; =)
ED Date: 4/7/05, Re-delivery date: 5/21/05
I don't get the type of acceleration you're talking about.
03-07-2007, 12:20 PM
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My Ride: 2005 545i, Orient Blue/Beige, Navigation, Premium Sound, Cold Weather, PDC, split-folding rear seats, DIY iPod. DIY Valentine 1 hardwire, loose nut behind the wheel.
Yes, but don't you have SMG, Vegas? I'm wondering if it's a common problem with the 545/Step engine/tranny combo.
I may have exaggerated with the caps lock and descriptive verbage, but not by much. It's just hard to take off without it being "jumpy" and I'm hoping there's a warranty fix out there for it. Anybody with my model year/engine/tranny combo running into this problem, or am I just crazy?
I may have exaggerated with the caps lock and descriptive verbage, but not by much. It's just hard to take off without it being "jumpy" and I'm hoping there's a warranty fix out there for it. Anybody with my model year/engine/tranny combo running into this problem, or am I just crazy?
03-07-2007, 02:31 PM
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I have the same problem with my '05 545i. I've brought it in multiple times to the service department and I'm told that this is how it is. Only smooth starts when it's in sports mode.
Deceleration to almost a stop and getting back on the gas used to create the "slam" effect. This has since been resolved after the dealer received a laptop from BMWNA and reprogrammed the transmission.
I'm still not sold that this is the way it is suppose to be. For what we paid for the car, we have to worry if whether we have a smooth acceration.
Deceleration to almost a stop and getting back on the gas used to create the "slam" effect. This has since been resolved after the dealer received a laptop from BMWNA and reprogrammed the transmission.
I'm still not sold that this is the way it is suppose to be. For what we paid for the car, we have to worry if whether we have a smooth acceration.
03-07-2007, 03:21 PM
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I've had the same issue also. It doesn't always do this, so I've learned to be cautious when accelerating. Pretty annoying. No change at all when dealer updated software.
03-07-2007, 06:20 PM
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My Ride: 2005 545, Titanium Gray II, 6 Spd, CWP, Sat, LPP Laser Defense, V1 (hard-wired), iPod, 38% ceramic tint, CDV delete, H&R Street Performance Coil Overs, Forced Air Induction, DriveData Pro Camera System (4 cams), M5 Front Bumper
Originally Posted by Wildcat' post='399661' date='Mar 7 2007, 12:32 PM
While this kind of power is fun to have on tap, I figure a luxury car of this quality should allow me to not get whiplash when I want to move. I don't have a lead foot (when I don't intend to have one), but I just can't seem to get this car to take off smoothly from a dead stop or even a "California stop". Is anyone else experiencing this, or do I have a faulty system somewhere?
Does this happen only when the engine is cold? Or all the time?
If the former, it may be normal. On the 545 I used to own (manual trani), I had to baby it until I'd driven a mile or two. Especially in the winter. Any attempt at vigorous driving before then meant my passengers thought I needed a refresher course at the DMV.
The problem - and I believe what you may be running into - is related to the engine software and emissions. Basically, the end result of EPA mucking and BMW tinkering is a very irritating driving experience when you first get the car going.
I've tried letting the car warm up for a few minutes, but that is normally not productive for a number of reasons. It also doesn't mitigate the problem sufficiently unless it warms up for awhile - like 10-15 minutes which is just a bad idea (if done on a regular basis) under most circumstances.
Since you have SMG, you may have an easier time finding an aftermarket software update which would mitigate or solve the problem, should you be so inclined. In my case, I finally got used to it and just accepted it - as annoying as it was.
RR
03-07-2007, 09:01 PM
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My Ride: 545iSMGSilver GrayAuburn Dakota LeatherLogic 7 Premium SoundSports Package
Originally Posted by Wildcat' post='399661' date='Mar 7 2007, 09:32 AM
Is anyone else experiencing this, or do I have a faulty system somewhere?
HAhahahah J/K I read your sig to figure out what tranny you had and thats where I got the loose nut idea from.
But Sorry cant help you. SMG takes off very smoothly... But I have heard of a lot of people complaing about the steptronic slam issue. but you have V24 according to your sig... it should have been fixed like waaay back in 18 or somthing. Weird...
03-07-2007, 11:45 PM
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My Ride: 545i SE Oct 03 (53 plate) 19" Alpina Classic rims
Wildcat, I have Step and dont have this problem when pulling away. Not sure what software I have though...
I do have the problem when slowing down with being unable to brake smotthly to a stop.
I do have the problem when slowing down with being unable to brake smotthly to a stop.
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