I?ve looked at a few  tabs for this song and I noticed some parts that people were getting confused about. I?ve played this song many times and I?ve played it live as well. So here?s the tab from how I play it. There?s also a rad intro to this song that I will have ready soon.

p- pluck
s- slap 
x- mute string
/- slide up
- slide down    
Intro:

  
||----------|------------|----------|3-5-3-5-3---------|
||----------|------------|----------|------------------|
||----------|------------|----------|---------1-3-1-3-1|
||-3--------|---00-1-2-x3|----------|------------------|

1 Verse: x2

    
||-----------------------|----------------------|-3-5-3-5-3----------|
||o----3-5----3-5----3-5-|----------3-5-----3-5-|--------------------|
||o----------------------|----------------------|----------1-3-1-3-1-|
||--1-3----1-3----1-3----|-00-1-2-x3-----1-3----|--------------------|

then after playing that twice play this:
2 Verse: x2

||---------|---------|---------|----------|---------|---------|
||o--------|---------|---------|----------|---------|---------|
||o--------|---------|---------|----------|---------|---------|
||-3-3-1-3-|-3-3-1-3-|-3-3-1-3-|-00-1-2-3-|-3-3-1-3-|-3-3-1-3-|

|-3-5-3-5-3----------|
|--------------------|
|--------------------|
|----------1-3-1-3-1-|


1 Chorus:

  
||-----------------|-----------------|--------------------------------|
||o----------------|-----------------|--------------------------------|
||o----------------|-----------------|----x5x-----x5x----x5x----x5x5--|
||-8-8-8-8-8-8-8-8-|-6-6-6-6-5-5-5-5-|-3-3-----3-3----3-3----3-3----3-|
   s s s s s s s s   s s s s s s s s   s sppp  s sppp s sppp s spppps

||-----------------|-----------------|----------|
||o----------------|-----------------|----------|
||o----------------|-----------------|----------|
||-8-8-8-8-8-8-8-8-|-6-6-6-6-5-5-5-5-|-3--------|
   s s s s s s s s   s s s s s s s s   s

|------------|----------|3-5-3-5-3---------|
|------------|----------|------------------|
|------------|----------|---------1-3-1-3-1|
|---00-1-2-x3|----------|------------------|


after playing this section you play it all again the same way except the second time you play the chorus, it goes straight into the solo:

verse:
||-----------------|-----------------|  Then straight into solo
||o----------------|-----------------|
||o----------------|-----------------|
||-8-8-8-8-8-8-8-8-|-6-6-6-6-5-5-5-5-|
   s s s s s s s s   s s s s s s s s   

Where the ~ is, flea hammers on from the 15th to the 16th fret a couple times really fast to give it that sound. Use the same principle from the 9th fret to the 10th fret below.
BASS SOLO:
||-----12-------10--9--10|---12x-------10---15~--12-|
||--------10h12----------|--------10h12-------------|
||10X--------------------|10------------------------|
||-----------------------|--------------------------|
  ss   p  s  s  p   p   p s  pp   s  s p    p    p

|-----12-----------10--10~~-|-1515-14-13-12------|
|---------10h12-------------|--------------------|
|10-X----------------X------|--------------------|
|---------------------------|---------------6-5-4|


Repeat this part 11 times:
|---0x-----------0x----------------|
|o-?-------3x----------------------|
|o---------------------------------|
|--3----0-1---0-3----0-1---6-5-4-3-|
   spp  s spp s spp  s s   s s s s
  
|---------------------------------|--------------------------|-12--10-|
|---------------------------------|--------------------------|--------|
|---------------------------------|-/17-17-17-17-17-17-17-17-|--------|
|-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-|--------------------------|--------|
  
|----------|------------|----------|3-5-3-5-3---------||
|----------|------------|----------|------------------||
|----------|------------|----------|---------1-3-1-3-1||
|-3--------|---00-1-2-x3|----------|------------------||

Then do 1 Verse 2x again, followed by 2 Verse 2x again.
Then do the chorus like this:

||-----------------|-----------------|--------------------------------|
||o----------------|-----------------|--------------------------------|
||o----------------|-----------------|----x5x-----x5x----x5x----x5x5--|
||-8-8-8-8-8-8-8-8-|-6-6-6-6-5-5-5-5-|-3-3-----3-3----3-3----3-3----3-|
   s s s s s s s s   s s s s s s s s   s sppp  s sppp s sppp s spppps

||-----------------|-----------------|
||o----------------|-----------------|
||o----------------|-----------------|
||-8-8-8-8-8-8-8-8-|-6-6-6-6-5-5-5-5-|
   s s s s s s s s   s s s s s s s s  

||-----12-------10--9--10|---12x-------10---15~--12-|
||--------10h12----------|--------10h12-------------|
||10X--------------------|10------------------------|
||-----------------------|--------------------------|
  ss   p  s  s  p   p   p s  pp   s  s p    p    p

|-----12-----------10--10~~-|-1515-14-13-12-------|
|---------10h12-------------|---------------------|
|10-X----------------X------|---------------------|
|---------------------------|--------------6-5-4-3| END

If I messed up please leave corrections. Flea is God-lots of love to ya.