TobiM
BMW M4 Throttle Problems? Common Issues & Solutions
Check engine light on
Loss of engine power
4 comment(s)
Thanks for sharing your experience! My M4 has 49756 KM and was just serviced last month. The issue started quite suddenly after a cold start, no warning signs before. Haven't scanned for codes yet, but your pedal module suggestion sounds promising since the symptoms match up. Really good to know it might not be the throttle body, as I was worried about a much bigger repair bill. Will get those codes read first thing tomorrow and report back. The car's been running great until now, no recent work except routine maintenance, so this caught me off guard.
Hey again! Thanks for sharing those details about your M4. Yeah, now that you mention it was a cold start issue and considering your mileage, I'm even more convinced it could be similar to what I dealt with on my M3. Good call on getting those codes read first, that's exactly what I should've mentioned in my first reply. When my pedal module went bad, it also happened without warning on a cold morning. The fact that your car was running fine before and just had routine maintenance actually mirrors my situation pretty closely. Just a heads up, when I got mine fixed, the workshop initially thought it was the throttle body too, but the diagnostic codes pointed to the pedal module. So definitely share those codes when you get them, it'll help narrow things down. The repair was pretty straightforward once they identified the real issue. By the way, have you noticed if the problem's any different when the engine's warm? With mine, the symptoms were worst right after start-up but would sometimes improve a bit after warming up, though still not running right. Not that it matters much for the fix, but might help confirm if we're dealing with the same gremlin. Keep us posted after you get those codes read!
Really appreciate all the detailed info! Yes, now that you mention it, I've noticed the car does behave a bit better after warming up, though still definitely not right. It's such a relief to hear your repair was relatively straightforward and didn't break the bank. Your experience is giving me hope this won't be as expensive as I initially feared. I've already called my workshop and booked it in for tomorrow morning for the diagnostic scan. I'll make sure to mention the pedal module possibility to them, might save some time troubleshooting. It's amazing how similar our situations sound, right down to the cold start timing. Will definitely update this thread once I get those codes read and know what's actually going on. Thanks again for taking the time to share your experience, it's been super helpful in calming my worries about this!
Hey there! I have some experience working on cars, and this sounds very familiar. I had a similar issue with my 2012 BMW M3 last year (also have an M2 in the garage). The symptoms were exactly like yours, limp mode, unresponsive throttle, and that annoying check engine light. Turned out the accelerator pedal module was acting up. My trusted workshop diagnosed it and replaced the faulty electronics in the pedal assembly. The whole thing cost me around 265 Euro, but it fixed the problem completely. Before jumping to conclusions about the throttle body, I'd suggest getting those error codes read. Could you share: Have you scanned for error codes? Did this start suddenly or gradually? Any recent work done on the car? This way we can help pinpoint if you're dealing with the same issue I had or something else entirely.